Usage patterns
〈事〉に関心があるto have interest/concern in something
He has an interest in environmental issues.
〈事〉に対する関心concern/interest regarding something
Young people's interest in politics is declining.
関心を示すto show interest
She showed strong interest in that topic.
Expressions· 8
関心を呼ぶattract attention; draw interest; be the talk of the town 関心を持つbe interested in; take an interest in; care about
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関心を高めるraise interest; stimulate interest; raise awareness