cross examine vs cross-examiner

cross examine is not a noun while cross-examiner is a noun.

Word	Noun	Adjective	Verb	Adverb
cross examine	No	No	Yes	No
cross-examiner	Yes	No	No	No

cross examine (noun)	cross-examiner (noun)
	someone who questions a witness carefully (especially about testimony given earlier)

cross examine (verb)	cross-examiner (verb)
question closely, or question a witness that has already been questioned by the opposing side