Suction or attractive force: the force that pulls objects toward something, such as the suction power of a vacuum cleaner or the attractive force of a magnet/gravity.
掃除機の吸引力が弱くなったので、フィルターを交換した。
The vacuum's suction power weakened, so I replaced the filter.
この磁石は吸引力が強く、小さな金属片でも簡単にくっつく。
This magnet has strong attractive force and easily picks up small metal pieces.
ブラックホールは非常に強い吸引力で光さえも逃がさない。
A black hole's extremely strong attraction prevents even light from escaping.