doro-doro（ドロドロ）
doro-doro describes a thick, heavy, and viscous state, often referring to substances with low fluidity that move slowly, like mud or magma, as well as emotions or relationships that feel dense or entangled.
bota-bota（ボタボタ）
bota-bota describes the sound or state of heavy drops of liquid falling one after another, usually in a slow but weighty rhythm.