Form front and Soaking up

Soaking up and form front are semantically related. In some cases you can use "Soaking up" instead a verb phrase "Form front".

Soaking up noun - (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid.

Form front and soaking up are semantically related. Sometimes you can use "Form front" instead a verb "Soaking up".