lad vs blighter

lad and blighter both are nouns.

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

As nouns, lad and blighter are synonyms defined as:

Other synonyms of lad include bloke, chap, cuss, fella, feller, fellow, gent.

lad (noun)	blighter (noun)
a male child (a familiar term of address to a boy)	a persistently annoying person
a boy or man	a boy or man