follower vs chaser

follower and chaser both are nouns.

Word	Noun	Adjective	Verb	Adverb
follower	Yes	No	No	No
chaser	Yes	No	No	No

As nouns, chaser is a hyponym of follower; that is, chaser is a word with a more specific, narrower meaning than follower:

Other hyponyms of follower include pursuer, shadow, shadow, shadower, tail.

follower (noun)	chaser (noun)
a person who accepts the leadership of another	a drink to follow immediately after another drink
someone who travels behind or pursues another	a person who is pursuing and trying to overtake or capture