interest

nouns

a sense of concern with and curiosity about someone or something
"an interest in music"
a reason for wanting something done
"for your sake"; "died for the sake of his country"; "in the interest of safety"; "in the common interest"
the power of attracting or holding one's attention (because it is unusual or exciting etc.)
"they said nothing of great interest"; "primary colors can add interest to a room"
a fixed charge for borrowing money; usually a percentage of the amount borrowed
"how much interest do you pay on your mortgage?"
is a type of (narrower)
a periodic charge that does not vary with business volume (as insurance or rent or mortgage payments etc.)
(law) a right or legal share of something; a financial involvement with something
"they have interests all over the world"; "a stake in the company's future"
(usually plural) a social group whose members control some field of activity and who have common aims
"the iron interests stepped up production"
a diversion that occupies one's time and thoughts (usually pleasantly)
"sailing is her favorite pastime"; "his main pastime is gambling"; "he counts reading among his interests"; "they criticized the boy for his limited pursuits"

verbs

excite the curiosity of; engage the interest of
antonym
is a type of (narrower)
call forth (emotions, feelings, and responses)
"arouse pity"; "raise a smile"; "evoke sympathy"
be on the mind of
"I worry about the second Germanic consonant shift"
be of importance or consequence
"This matters to me!"