expression

As a verb convey

is to transport; to carry; to take from one place to another.

As a noun expression is

a particular way of phrasing an idea.

Boundary is a related term of expression.

As nouns the difference between boundary and expression

is that boundary is the dividing line or location between two areas while expression is a particular way of phrasing an idea.

As nouns the difference between expression and request

is that expression is a particular way of phrasing an idea while request is act of (l).

As a verb request is

to express the need or desire for.

As nouns the difference between expression and enunciation

is that expression is a particular way of phrasing an idea while enunciation is the act of enunciating, announcing, proclaiming, or making known; open attestation; declaration; as, the enunciation of an important truth.

Exhibition is a related term of expression.

As nouns the difference between exhibition and expression

is that exhibition is an instance of exhibiting, or something exhibited while expression is a particular way of phrasing an idea.

As nouns the difference between collection and expression

is that collection is a set of items or amount of material procured or gathered together while expression is a particular way of phrasing an idea.

Bound is a related term of expression.

In mathematics|lang=en terms the difference between bound and expression

is that bound is (mathematics) to be the boundary of while expression is (mathematics) an arrangement of symbols denoting values, operations performed on them, and grouping symbols.

As nouns the difference between bound and expression

is that bound is (often|used in plural) a boundary, the border which one must cross in order to enter or leave a territory or bound can be a sizeable jump, great leap while expression is a particular way of phrasing an idea.

As a verb bound

is (bind) or bound can be to surround a territory or other geographical entity or bound can be to leap, move by jumping.

As an adjective bound

is (with infinitive) obliged (to) or bound can be (obsolete) ready, prepared.