user-manual: Differentiate between 'to run a target' and 'to execute a target'

Author: m-kru

user-manual/glossary.typ

@@ -100,9 +100,14 @@ Some of them are formally defined because they are helpful when discussing, for
   Example tools are: GHDL, Verilator, yosys, Vivado, nvc, etc.
 ]
 
+#block(breakable:false)[
+/ to execute a target:
+  To execute the target procedure code by explicitly or implicitly calling the target procedure, for example, by calling `hbs::AddDep`.
+]
+
 #block(breakable:false)[
 / to run a target:
-  To execute commands defined in the target.
+  To call the `run` or `dry-run` HBS command for a given target.
 ]
 
 #pagebreak()