inflect vs speak

inflect and speak both are verbs.

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

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

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

inflect (verb)	speak (verb)
vary the pitch of one's speech	express in speech
change the form of a word in accordance as required by the grammatical rules of the language	exchange thoughts; talk with
	use language
	give a speech to
	make a characteristic or natural sound