squeak, creak, grate
軋 centers on harsh, high-pitched friction sounds: squeaking, creaking, or grating, especially from moving parts rubbing together.
軋 combines 車 (vehicle, wheel) with 乚, a component that may suggest a bending or pressing motion, together evoking the squeaking or grating sound of a wheel under pressure.
A cart (車) with a bent axle (乚) makes a loud squeak as it grates along the road.
For アツ, imagine the grating sound of a wheel that makes you say 'ats!' in irritation: ats -> アツ, like the squeak of the cart.
friction; discord; strife
to jar; to creak; to grate
creak; squeak; creaking; squeaking
feeble anger (that one cannot act on because one is powerless); the clenching teeth of a dried sardine
to engage in (mutual) competition
creaking; squeaking; grating; grinding; rasping
to creak; to squeak; to grate; to grind; to rasp