ぶつかる
ぶつかる · butsukaru · JLPT N3 · verb-godan
to collide with
🚗 butsu-karu: a car (karu) goes butt-first and bumps into the wall
It shares a root with ぶつ (to hit) and ぶつける (to bump something into). With ぶつかる, you or a thing does the colliding, as in 車が壁にぶつかる, the car hits the wall.