caller vs cool

caller and cool both are nouns.

Word	Noun	Adjective	Verb	Adverb
caller	Yes	Yes	No	No
cool	Yes	Yes	Yes	No

caller (noun)	cool (noun)
a social or business visitor	the quality of being at a refreshingly low temperature
the person initiating a telephone call	great coolness and composure under strain
the person who convenes a meeting
someone who proclaims or summons in a loud voice
a person who announces the changes of steps during a dance
the bettor in a card game who matches the bet and calls for a show of hands
an investor who buys a call option

caller (adjective)	cool (adjective)
providing coolness	neither warm nor very cold; giving relief from heat
fresh	psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike
	inducing the impression of coolness; used especially of greens and blues and violets when referring to color
	marked by calm self-control (especially in trying circumstances); unemotional
	fashionable and attractive at the time; often skilled or socially adept
	being satisfactory or in satisfactory condition
	used of a quantity or amount (especially of money) for emphasis