The difference between Beat up and Rough up

Beat up as a verb (transitive):

To give a severe beating to; to assault violently with repeated blows.

Beat up as a verb (obsolete):

To attack suddenly; to alarm.

Beat up as a verb:

To cause, by some other means, injuries comparable to the result of being beaten up.

Beat up as a verb (reflexive):

To feel badly guilty and accuse oneself over something. Usually followed by over or about.

Beat up as a verb (military, WW2 air pilots' usage):

Repeatedly bomb a military target or targets.

Beat up as a verb:

To get something done, derived from the idea of beating for game

Beat up as a verb (intransitive, nautical):

To sail to windward using a series of alternate tacks across the wind.

Beat up as a verb (intransitive, dated):

To disturb; to pay an untimely visit to.

Beat up as a verb (intransitive, dated):

To go diligently about in order to get helpers or participants in an enterprise.

Beat up as an adjective (slang):

Battered by time and usage; beaten up.

Beat up as a noun:

A person who, or thing that, has been beaten up.

Beat up as a noun (UK, military slang):

An act of beating up: A raid. A beating; a hazing.

Beat up as a noun (UK, Australia, New Zealand):

An artificially or disingenuously manufactured alarm or outcry, especially one agitated by or through the media.

Beat up as a noun (forestry):

A tree planted later than others in a plantation.

Rough up as a verb:

to manhandle or beat up

Rough up as a verb:

To make rough, to roughen (especially doing so to wood while raising the grain)