class vs lecture

class and lecture both are nouns.

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

class (noun)	lecture (noun)
education imparted in a series of lessons or meetings	teaching by giving a discourse on some subject (typically to a class)
elegance in dress or behavior	a speech that is open to the public
a collection of things sharing a common attribute	a lengthy rebuke
people having the same social, economic, or educational status
(biology) a taxonomic group containing one or more orders
a body of students who are taught together
a body of students who graduate together
a league ranked by quality

class (verb)	lecture (verb)
arrange or order by classes or categories	censure severely or angrily
	deliver a lecture or talk