lather vs horsewhip

lather and horsewhip both are nouns.

Word	Noun	Adjective	Verb	Adverb
lather	Yes	No	Yes	No
horsewhip	Yes	No	Yes	No

As verbs, horsewhip is a hyponym of lather; that is, horsewhip is a word with a more specific, narrower meaning than lather:

Other hyponyms of lather include flagellate, scourge, leather, switch, cowhide, cat, birch.

lather (noun)	horsewhip (noun)
the froth produced by soaps or detergents	a whip for controlling horses
the foam resulting from excessive sweating (as on a horse)
a workman who puts up laths
agitation resulting from active worry

lather (verb)	horsewhip (verb)
rub soap all over, usually with the purpose of cleaning	whip with a whip intended for horses
exude sweat or lather
form a lather
beat severely with a whip or rod