Collocations for soap - noun

gentle, mild
perfumed, scented
liquid
carbolic (esp. BrE)
antibacterial
Clean the wound with mild antibacterial soap.

bar (AmE)
I switched to liquid shower gel from bar soap.

bath, hand (esp. AmE), toilet (BrE)
dish, dishwashing, laundry (all AmE)
I cleaned it with warm water and liquid dish soap.

saddle

bar, cake (less frequent)

use, wash (sth) with

powder (BrE)
bubble, suds
dish, dispenser

soap and water