lecture vs learn

lecture is a noun but learn is not a noun.

Word	Noun	Adjective	Verb	Adverb
lecture	Yes	No	Yes	No
learn	No	No	Yes	No

As verbs, learn is a hypernym of lecture; that is, learn is a word with a broader meaning than lecture:

Other hypernyms of lecture include instruct, teach.

lecture (noun)	learn (noun)
teaching by giving a discourse on some subject (typically to a class)
a speech that is open to the public
a lengthy rebuke

lecture (verb)	learn (verb)
censure severely or angrily	gain knowledge or skills
deliver a lecture or talk	get to know or become aware of, usually accidentally
	be a student of a certain subject
	commit to memory; learn by heart
	impart skills or knowledge to
	find out, learn, or determine with certainty, usually by making an inquiry or other effort