lad vs male

lad and male both are nouns.

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

As nouns, male is a hypernym of lad; that is, male is a word with a broader meaning than lad:

Other hypernyms of lad include male person.

lad (noun)	male (noun)
a male child (a familiar term of address to a boy)	an animal that produces gametes (spermatozoa) that can fertilize female gametes (ova)
a boy or man	a person who belongs to the sex that cannot have babies

lad (adjective)	male (adjective)
	being the sex (of plant or animal) that produces gametes (spermatozoa) that perform the fertilizing function in generation
	for or pertaining to or composed of men or boys
	characteristic of a man