tabi vs tabis

tabi and tabis both are nouns.

Word	Noun	Adjective	Verb	Adverb
tabi	Yes	No	No	No
tabis	Yes	No	No	No

As nouns, tabi and tabis are synonyms defined as:

tabi and tabis: a sock with a separation for the big toe; worn with thong sandals by the Japanese

tabi (noun)	tabis (noun)
a sock with a separation for the big toe; worn with thong sandals by the Japanese	a sock with a separation for the big toe; worn with thong sandals by the Japanese