ejaculate vs speak

ejaculate is a noun but speak is not a noun.

Word	Noun	Adjective	Verb	Adverb
ejaculate	Yes	No	Yes	No
speak	No	No	Yes	No

As verbs, speak is a hypernym of ejaculate; that is, speak is a word with a broader meaning than ejaculate:

Other hypernyms of ejaculate include mouth, talk, utter, verbalise, verbalize.

ejaculate (noun)	speak (noun)
the thick white fluid containing spermatozoa that is ejaculated by the male genital tract

ejaculate (verb)	speak (verb)
eject semen	express in speech
utter impulsively	exchange thoughts; talk with
	use language
	give a speech to
	make a characteristic or natural sound