turnup vs trouser cuff

turnup and trouser cuff both are nouns.

Word	Noun	Adjective	Verb	Adverb
turnup	Yes	No	No	No
trouser cuff	Yes	No	No	No

As nouns, trouser cuff is a hyponym of turnup; that is, trouser cuff is a word with a more specific, narrower meaning than turnup:

turnup: the lap consisting of a turned-back hem encircling the end of the sleeve or leg
trouser cuff: a cuff on the bottoms of trouser legs

turnup (noun)	trouser cuff (noun)
the lap consisting of a turned-back hem encircling the end of the sleeve or leg	a cuff on the bottoms of trouser legs