strength; power; proficiency; ability
Suffix attached to nouns to indicate the strength, power, or ability related to that noun. Common in compounds such as 体力 (physical strength), 学力 (academic ability), 経済力 (economic power).
He has high language proficiency.
This job requires the ability to concentrate.
She has strong language ability.
I studied abroad and gained practical skills.
Reading improves one's thinking ability.