scab

As a noun scab

is an incrustation over a sore, wound, vesicle, or pustule, formed during healing.

As a verb scab

is to become covered by a scab or scabs.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As verbs the difference between skud and scab

is that skud is (northumbria) to hit while scab is to become covered by a scab or scabs.

As a noun scab is

an incrustation over a sore, wound, vesicle, or pustule, formed during healing.

As a noun scab

is an incrustation over a sore, wound, vesicle, or pustule, formed during healing.

As a verb scab

is to become covered by a scab or scabs.

As an adjective undefined is

lacking a definition or value.

In lang=en terms the difference between crust and scab

is that crust is to form a crust while scab is to act as a strikebreaker.

As nouns the difference between crust and scab

is that crust is a more solid, dense or hard layer on a surface or boundary while scab is an incrustation over a sore, wound, vesicle, or pustule, formed during healing.

As verbs the difference between crust and scab

is that crust is to cover with a crust while scab is to become covered by a scab or scabs.

As a noun scab

is an incrustation over a sore, wound, vesicle, or pustule, formed during healing.

As a verb scab

is to become covered by a scab or scabs.

As an adjective epithelial is

epithelial.

In lang=en terms the difference between scab and crab

is that scab is to act as a strikebreaker while crab is to navigate (an aircraft, eg a glider) sideways against an air current in order to maintain a straight-line course.

As nouns the difference between scab and crab

is that scab is an incrustation over a sore, wound, vesicle, or pustule, formed during healing while crab is a crustacean of the infraorder brachyura, having five pairs of legs, the foremost of which are in the form of claws, and a carapace or crab can be the crab apple or wild apple or crab can be the tree species , native of south america or crab can be short for carabiner.

As verbs the difference between scab and crab

is that scab is to become covered by a scab or scabs while crab is to fish for crabs or crab can be (obsolete) to irritate, make surly or sour.

As nouns the difference between scab and sister

is that scab is an incrustation over a sore, wound, vesicle, or pustule, formed during healing while sister is title of respect for an adult female member of a religious or fraternal order.

As a verb scab

is to become covered by a scab or scabs.

As nouns the difference between cancer and scab

is that cancer is cancer while scab is an incrustation over a sore, wound, vesicle, or pustule, formed during healing.

As a verb scab is

to become covered by a scab or scabs.

In transitive terms the difference between scab and null

is that scab is to remove part of a surface (from) while null is to nullify; to annul.

As nouns the difference between scab and null

is that scab is an incrustation over a sore, wound, vesicle, or pustule, formed during healing while null is a non-existent or empty value or set of values.

As verbs the difference between scab and null

is that scab is to become covered by a scab or scabs while null is to nullify; to annul.

As an adjective null is

having no validity, "null and void.

As nouns the difference between serum and scab

is that serum is serum while scab is an incrustation over a sore, wound, vesicle, or pustule, formed during healing.

As a verb scab is

to become covered by a scab or scabs.