The most common use of the interpretation semantics of a word w is when w is text-interpreted in interpretation state, the default state of the text interpreter.
I.e., when you start Gforth and type
s" hello" type
the text interpreter performs the interpretation semantics of the
words s" and type.
Also, when you get the execution token of a word w with
`w, ' w or ['] w (see Execution token), the execution token represents the interpretation semantics.
When you get the execution token of the most recently defined word
with latestxt (see Anonymous Definitions), that also refers
to the interpretation semantics of the word.
Finally, name>interpret (see Name token) produces an
execution token that represents the interpretation semantics of the
word.