top vs cap

top and cap both are nouns.

Word	Noun	Adjective	Verb	Adverb
top	Yes	Yes	Yes	No
cap	Yes	No	Yes	No

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

Other hyponyms of top include lid, manhole cover, screwtop.

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

Other hyponyms of top include capital, chapiter, masthead, crown, head, crown, treetop.

top (noun)	cap (noun)
a garment (especially for women) that extends from the shoulders to the waist or hips	a tight-fitting headdress
covering for a hole (especially a hole in the top of a container)	the upper part of a column that supports the entablature
a canvas tent to house the audience at a circus performance	a top (as for a bottle)
a conical child's plaything tapering to a steel point on which it can be made to spin	something serving as a cover or protection
platform surrounding the head of a lower mast	(dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
the greatest possible intensity	a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive
the highest or uppermost side of anything	an upper limit on what is allowed
the upper part of anything	a protective covering that is part of a plant
the top or extreme point of something (usually a mountain or hill)	a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
the highest level or degree attainable; the highest stage of development
the first half of an inning; while the visiting team is at bat

top (adjective)	cap (adjective)
situated at the top or highest position

top (verb)	cap (verb)
be the culminating event	restrict the number or amount of
finish up or conclude	lie at the top of
cut the top off
strike (the top part of a ball in golf, baseball, or pool) giving it a forward spin
pass by, over, or under without making contact
reach or ascend the top of
provide with a top or finish the top (of a structure)
be superior or better than some standard
be at the top of or constitute the top or highest point
be ahead of others; be the first