As nouns the difference between subset and subarc

is that subset is (set theory) with respect to another set, a set such that each of its elements is also an element of the other set while subarc is an arc which is a subset of another arc.

As nouns the difference between diplomatic and pourparler

is that diplomatic is diplomat while pourparler is a diplomatic consultation, preliminary to a treaty.

As nouns the difference between consultation and pourparler

is that consultation is the act of consulting while pourparler is a diplomatic consultation, preliminary to a treaty.

As nouns the difference between preliminary and pourparler

is that preliminary is a preparation for a main matter; an introduction while pourparler is a diplomatic consultation, preliminary to a treaty.

As an adjective preliminary

is in preparation for the main matter; initial, introductory, preparatory.

As verbs the difference between combat and deraign

is that combat is to fight with; to struggle for victory against while deraign is (legal|obsolete|transitive) to prove or to refute by proof, especially on threat of combat.

As a noun combat

is a battle, a fight (often one in which weapons are used); a struggle for victory.

As verbs the difference between engage and deraign

is that engage is while deraign is (legal|obsolete|transitive) to prove or to refute by proof, especially on threat of combat.

Darrain is a related term of deraign.

As verbs the difference between darrain and deraign

is that darrain is (obsolete|transitive) to make ready to fight; to arm oneself for combat while deraign is (legal|obsolete|transitive) to prove or to refute by proof, especially on threat of combat.

As a noun protist

is protist.

As an adjective protistan is

of or pertaining to the protists.

Polysome is an abbreviation of psrna.

As a noun polysome

is a polyribosome.

As an abbreviation psrna is

(genetics) polysome-associated rna.

Associated is an abbreviation of psrna.

As a verb associated

is (associate).

As an abbreviation psrna is

(genetics) polysome-associated rna.