class vs lecturing

class and lecturing both are nouns.

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

class (noun)	lecturing (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 collection of things sharing a common attribute
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)	lecturing (verb)
arrange or order by classes or categories