[DOCS] Adds entries to glossary (#91962)

* [DOCS] Adds entries for Maps app

* [DOCS] Adds entry for heat map

* [DOCS] Adds geo terms

* Update docs/glossary.asciidoc

Co-authored-by: Lisa Cawley <lcawley@elastic.co>

* Update docs/glossary.asciidoc

Co-authored-by: Lisa Cawley <lcawley@elastic.co>

* Update docs/glossary.asciidoc

Co-authored-by: Lisa Cawley <lcawley@elastic.co>

* Update docs/glossary.asciidoc

Co-authored-by: Lisa Cawley <lcawley@elastic.co>

* Update docs/glossary.asciidoc

* Update docs/glossary.asciidoc

* Update docs/glossary.asciidoc

Co-authored-by: Lisa Cawley <lcawley@elastic.co>

Co-authored-by: Lisa Cawley <lcawley@elastic.co>

docs/glossary.asciidoc

@@ -104,6 +104,13 @@ Specifies how many documents must contain a pair of terms before it is considere
 a useful connection in a graph.
 // end::certainty-def[]
 
+[[glossary-clusters]] clusters ::
+// tag::clusters-def[]
+A layer type and display option in the *Maps* application.
+Clusters display a cluster symbol across a grid on the map, one symbol per grid cluster.
+The cluster location is the weighted centroid for all documents in the grid cell.
+// end::clusters-def[]
+
 [[glossary-condition]] condition ::
 // tag::condition-def[]
 Specifies the circumstances that must be met to trigger an alert.
@@ -202,6 +209,29 @@ a set of entities. Each entity is represented by a node. Connections between
 nodes are represented by <<glossary-edge,edges>>.  See {kibana-ref}/xpack-graph.html[Graph].
 // end::graph-def[]
 
+[[glossary-geojson]] GeoJSON ::
+// tag::geojson-def[]
+A format for representing geospatial data. GeoJSON is also a file-type,
+commonly used in the *Maps* application to upload a file of geospatial data.
+See {kibana-ref}/indexing-geojson-data-tutorial.html[GeoJSON data].
+// end::geojson-def[]
+
+[[glossary-geo-point]] geo-point ::
+// tag::geo-point-def[]
+A field type in {es}. A geo-point field accepts latitude-longitude pairs
+for storing point locations. The latitude-longitude format can be from a string,
+geohash, array, well-known text, or object.
+See {ref}/geo-point.html[geo-point].
+// end::geo-point-def[]
+
+[[glossary-geo-shape]] geo-shape ::
+// tag::geo-shape-def[]
+A field type in {es}. A geo-shape field accepts arbitrary geographic primitives,
+like polygons, lines, or rectangles (and more). You can populate a geo-shape
+field from GeoJSON or well-known text.
+See {ref}/geo-shape.html[geo-shape].
+// end::geo-shape-def[]
+
 [[glossary-grok-debugger]] Grok Debugger ::
 // tag::grok-debugger-def[]
 A tool for building and debugging grok patterns. Grok is good for parsing
@@ -209,6 +239,18 @@ syslog, Apache, and other webserver logs. See
 {kibana-ref}/xpack-grokdebugger.html[Debugging grok expressions].
 // end::grok-debugger-def[]
 
+[float]
+[[h_glos]]
+== H
+
+[[glossary-heat-map]] heat map ::
+// tag::heat-map-def[]
+A layer type in the *Maps* application. Heat maps cluster locations to show higher
+(or lower) densities. Heat maps describe a visualization with color-coded cells
+or regions to analyze patterns across multiple dimensions.
+See {kibana-ref}/heatmap-layer.html[Heat map layer].
+// end::heat-map-def[]
+
 
 [float]
 [[k_glos]]
@@ -216,7 +258,7 @@ syslog, Apache, and other webserver logs. See
 
 [[glossary-kibana-privileges]] {kib} privileges ::
 // tag::kibana-privileges-def[]
-Enable administrators to grant users read-only, read-write, or no access to 
+Enable administrators to grant users read-only, read-write, or no access to
 individual features within <<glossary-space,spaces>> in {kib}. See
 {kibana-ref}/kibana-privileges.html[{kib} privileges].
 // end::kibana-privileges-def[]
@@ -315,6 +357,13 @@ A field that computes data on the fly from the data in {es} indices.
 Scripted field data is shown in Discover and used in visualizations.
 // end::scripted-field-def[]
 
+[[glossary-search-session]] search session ::
+// tag::search-session-def[]
+A group of one or more queries that are executed asynchronously.
+The results of the session are stored for a period of time,
+so you can recall the query. Search sessions are user specific.
+// end::search-session-def[]
+
 [[glossary-shareable]] shareable ::
 // tag::shareable-def[]
 A Canvas workpad that can be embedded on any webpage.
@@ -340,6 +389,13 @@ The general purpose alert types {kib} provides out of the box.  Index threshold
 [[t_glos]]
 == T
 
+[[glossary-tag]] tag ::
+// tag::tag-def[]
+A keyword or label that you assign to {kib} saved objects, such as dashboards and visualizations,
+so you can classify them in a way that is meaningful to you. Tags makes it easier for you to manage your content.
+See {kibana-ref}/managing-tags.html[Tags].
+// end::tag-def[]
+
 [[glossary-term-join]] term join ::
 // tag::term-join-def[]
 A shared key that combines vector features with the results of an
@@ -364,6 +420,12 @@ See {kibana-ref}/dashboard.html[Timelion].
 Timestamped data such as logs, metrics, and events that is indexed on an ongoing basis.
 // end::time-series-data-def[]
 
+[[glossary-tracks]] tracks ::
+// tag::tracks-def[]
+A layer type in the *Maps* application. This layer converts a series of point
+locations into a line, often representing a path or route.
+// end::tracks-def[]
+
 
 [[glossary-TSVB-data]] TSVB ::
 // tag::tsvb-def[]
@@ -423,3 +485,10 @@ A workspace where you build presentations of your live data in <<glossary-canvas
 See
 {kibana-ref}/canvas.html[Create a workpad].
 // end::workpad-def[]
+
+[[glossary-wms]] Web Map Service (WMS) ::
+// tag::wms-def[]
+A layer type in the *Maps* application. 
+Add a WMS source to provide authoritative geographic context to your map.
+See the https://www.ogc.org/standards/wms[OpenGIS Web Map Service].
+// end::wms-def[]