supratidal

As a noun terms

is .

As an adjective supratidal is

(geology) describing the marginal zone above the level of high tide.

As a noun zone

is zone.

As an adjective supratidal is

(geology) describing the marginal zone above the level of high tide.

As adjectives the difference between marginal and supratidal

is that marginal is of, relating to, or located at or near a margin or edge; also figurative usages of location and margin (edge) while supratidal is describing the marginal zone above the level of high tide.

As a noun marginal

is something that is marginal.