chukker vs chukka

chukker and chukka both are nouns.

Word	Noun	Adjective	Verb	Adverb
chukker	Yes	No	No	No
chukka	Yes	No	No	No

As nouns, chukker and chukka are synonyms defined as:

chukker and chukka: (polo) one of six divisions into which a polo match is divided

chukker (noun)	chukka (noun)
(polo) one of six divisions into which a polo match is divided	a shoe that comes up to the ankle and is laced through two or three pairs of eyelets; often made of suede
	(polo) one of six divisions into which a polo match is divided