underlay

As nouns the difference between underlay and null

is that underlay is a layer (of earth, etc) that lies under another; substratum while null is zero, nil; the cardinal number before einn.

As a verb underlay

is (underlie) or underlay can be to lay (something) underneath something else; to put under.

As a letter s

is the letter s with a.

As a verb underlay is

(underlie) or underlay can be to lay (something) underneath something else; to put under.

As a noun underlay is

a layer (of earth, etc) that lies under another; substratum.

As an adverb beneath

is below or underneath.

As a preposition beneath

is below.

As a verb underlay is

(underlie) or underlay can be to lay (something) underneath something else; to put under.

As a noun underlay is

a layer (of earth, etc) that lies under another; substratum.

As a verb underlay

is (underlie) or underlay can be to lay (something) underneath something else; to put under.

As a noun underlay

is a layer (of earth, etc) that lies under another; substratum.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between noma and underlay

is that noma is a gangrenous disease leading to tissue destruction of the face, especially the mouth and cheek while underlay is a layer (of earth, etc) that lies under another; substratum.

As a verb underlay is

(underlie) or underlay can be to lay (something) underneath something else; to put under.

As verbs the difference between underlaid and underlay

is that underlaid is past tense of underlay while underlay is simple past of underlie.

As a noun underlay is

a layer (of earth, etc.) that lies under another; substratum.

As nouns the difference between underlay and subfloor

is that underlay is a layer (of earth, etc) that lies under another; substratum while subfloor is (construction) the floor structure supporting and underlying the visible flooring or other finishing surface such as a carpet.

As a verb underlay

is (underlie) or underlay can be to lay (something) underneath something else; to put under.

As a verb underlay

is simple past of underlie.

As a noun underlay

is a layer (of earth, etc.) that lies under another; substratum.

As an adjective latent is

existing or present but concealed or inactive.

In transitive terms the difference between underpin and underlay

is that underpin is to support from below with props or masonry while underlay is to put a tap on (a shoe).

As a noun underlay is

a layer (of earth, etc.) that lies under another; substratum.