lecture vs lambast

lecture is a noun but lambast is not a noun.

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

As verbs, lecture and lambast are synonyms defined as:

lecture (noun)	lambast (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)	lambast (verb)
censure severely or angrily	censure severely or angrily
deliver a lecture or talk	beat with a cane