lad vs cub

lad and cub both are nouns.

Word	Noun	Adjective	Verb	Adverb
lad	Yes	No	No	No
cub	Yes	No	Yes	No

As nouns, lad and cub are synonyms defined as:

Other synonyms of lad include laddie, sonny, sonny boy.

lad (noun)	cub (noun)
a male child (a familiar term of address to a boy)	the young of certain carnivorous mammals such as the bear or wolf or lion
a boy or man	a male child (a familiar term of address to a boy)
	an awkward and inexperienced youth

lad (verb)	cub (verb)
	give birth to cubs