callus

As a noun callus

is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As a verb callus

is to form such hardened tissue.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between meristem and callus

is that meristem is meristem (zone of active cell division) while callus is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As a verb callus is

to form such hardened tissue.

As verbs the difference between callus and calli

is that callus is to form such hardened tissue while calli is .

As a noun callus

is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As nouns the difference between cocoon and callus

is that cocoon is the silky protective case spun by the larvae of some insects and moths in which they metamorphose, the pupa while callus is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As verbs the difference between cocoon and callus

is that cocoon is to envelop in a protective case, or to withdraw into such a case while callus is to form such hardened tissue.

As a noun callus is

a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As a verb callus is

to form such hardened tissue.

Callos is often a misspelling of callus.

Callos has no English definition.

As a noun callus is

a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As a verb callus is

to form such hardened tissue.

In intransitive terms the difference between blister and callus

is that blister is to break out in blisters while callus is to form such hardened tissue.

As nouns the difference between blister and callus

is that blister is a small bubble between the layers of the skin that contains watery or bloody fluid and is caused by friction and pressure, burning, freezing, chemical irritation, disease or infection while callus is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As verbs the difference between blister and callus

is that blister is to cause blisters to form while callus is to form such hardened tissue.

As nouns the difference between callow and callus

is that callow is a callow young bird while callus is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As an adjective callow

is (obsolete) bald.

As a verb callus is

to form such hardened tissue.

As nouns the difference between bunion and callus

is that bunion is (pathology) a bump or bulge on the first joint of the big toe caused by the swelling of a sac of fluid under the skin while callus is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.

As a verb callus is

to form such hardened tissue.

As nouns the difference between callus and tallus

is that callus is a hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use while tallus is an alternative spelling of talus.

As a verb callus

is to form such hardened tissue.