kicker vs dropkicker

kicker and dropkicker both are nouns.

Word	Noun	Adjective	Verb	Adverb
kicker	Yes	No	No	No
dropkicker	Yes	No	No	No

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

kicker: a player who kicks the football
dropkicker: a football kicker who drops the ball and kicks it just as it reaches the ground

Other hyponyms of kicker include place-kicker, placekicker, punter.

kicker (noun)	dropkicker (noun)
a player who kicks the football	a football kicker who drops the ball and kicks it just as it reaches the ground