hockey vs period

hockey and period both are nouns.

Word	Noun	Adjective	Verb	Adverb
hockey	Yes	No	No	No
period	Yes	No	No	No

hockey (noun)	period (noun)
a game resembling ice hockey that is played on an open field; two opposing teams use curved hockey sticks try to drive a ball into the opponents' net	a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations
a game played on an ice rink by two opposing teams of six skaters each who try to knock a flat round puck into the opponents' goal with angled hockey sticks	the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause
	an amount of time
	the interval taken to complete one cycle of a regularly repeating phenomenon
	a unit of geological time during which a system of rocks formed
	the end or completion of something
	(ice hockey) one of three divisions into which play is divided in hockey games