coarsen

As verbs the difference between coarsen and rough

is that coarsen is to make more coarse while rough is to create in an approximate form.

As an adjective rough is

having a texture that has much friction not smooth; uneven.

As a noun rough is

the unmowed part of a golf course.

As an adverb rough is

in a rough manner; rudely; roughly.

As a verb coarsen is

to make more coarse.

As an adjective coarser

is (coarse).

As a verb coarsen is

to make more coarse.

As verbs the difference between coarsen and hoarsen

is that coarsen is to make more coarse while hoarsen is (intransitive) to make or become hoarse.

As a noun taxonomy

is the science or the technique used to make a classification.

As a verb coarsen is

to make more coarse.