buskin vs top boot

buskin and top boot both are nouns.

Word	Noun	Adjective	Verb	Adverb
buskin	Yes	No	No	No
top boot	Yes	No	No	No

As nouns, buskin and top boot are synonyms defined as:

Other synonyms of buskin include combat boot, desert boot, half boot.

buskin (noun)	top boot (noun)
a boot reaching halfway up to the knee	a boot reaching halfway up to the knee