As a noun atom

is the smallest medieval unit of time, equal to fifteen ninety-fourths of a second.

As an adjective subnuclear is

smaller than a nucleus of an atom.

As nouns the difference between back and nuchal

is that back is a small stream or brook while nuchal is the back of the neck.

As an adjective nuchal is

of or pertaining to the back or nape of the neck.

As nouns the difference between neck and nuchal

is that neck is the part of body connecting the head and the trunk found in humans and some animals while nuchal is the back of the neck.

As a verb neck

is to hang by the neck; strangle; kill, eliminate.

As an adjective nuchal is

of or pertaining to the back or nape of the neck.

Nuchal is a synonym of nape.

As nouns the difference between nape and nuchal

is that nape is the back part of the neck while nuchal is the back of the neck.

As a verb nape

is to bombard with napalm.

As an adjective nuchal is

of or pertaining to the back or nape of the neck.

Nuchal is a synonym of nucha.

Nuchal is a derived term of nucha.

As nouns the difference between nucha and nuchal

is that nucha is the nape or back of the neck while nuchal is the back of the neck.

As an adjective nuchal is

of or pertaining to the back or nape of the neck.

As a verb code

is .

As a noun fuero is

a code; a charter; a grant of privileges.

As nouns the difference between charter and fuero

is that charter is a document issued by some authority, creating a public or private institution, and defining its purposes and privileges while fuero is a code; a charter; a grant of privileges.

As an adjective charter

is leased or hired.

As a verb charter

is to grant or establish a charter.

As nouns the difference between spasm and spasmogen

is that spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ while spasmogen is (pharmacology) a substance which induces spasms.

As a verb spasm

is to produce and undergo a.

Spasmogenic is a derived term of spasmogen.

As an adjective spasmogenic

is tending to induce spasms.

As a noun spasmogen is

(pharmacology) a substance which induces spasms.

Spasmogen is a related term of spasmolytic.

As an adjective spasmolytic

is antispastic, antispasmodic.

As a noun spasmogen is

a substance which induces spasms.