whinny vs whicker

whinny and whicker both are nouns.

Word	Noun	Adjective	Verb	Adverb
whinny	Yes	No	Yes	No
whicker	Yes	No	Yes	No

As nouns, whinny and whicker are synonyms defined as:

Other synonyms of whinny include neigh, nicker.

As verbs, whinny and whicker are synonyms defined as:

Other synonyms of whinny include neigh, nicker.

whinny (noun)	whicker (noun)
the characteristic sounds made by a horse	the characteristic sounds made by a horse

whinny (verb)	whicker (verb)
make a characteristic sound, of a horse	make a characteristic sound, of a horse