lecture vs objurgate

lecture is a noun but objurgate is not a noun.

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

As verbs, objurgate is a hyponym of lecture; that is, objurgate is a word with a more specific, narrower meaning than lecture:

Other hyponyms of lecture include castigate, chasten, chastise, correct, brush down, tell off.

lecture (noun)	objurgate (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)	objurgate (verb)
censure severely or angrily	express strong disapproval of
deliver a lecture or talk	censure severely