lamb vs give birth

lamb is a noun but give birth is not a noun.

Word	Noun	Adjective	Verb	Adverb
lamb	Yes	No	Yes	No
give birth	No	No	Yes	No

As verbs, give birth is a hypernym of lamb; that is, give birth is a word with a broader meaning than lamb:

Other hypernyms of lamb include bear, birth, deliver, have.

lamb (noun)	give birth (noun)
young sheep
the flesh of a young domestic sheep eaten as food
a sweet innocent mild-mannered person (especially a child)
a person easily deceived or cheated (especially in financial matters)

lamb (verb)	give birth (verb)
give birth to a lamb	cause to be born
	create or produce an idea