As a proper noun thorn

is for someone living near a thorn bush.

As an adjective undefined is

lacking a definition or value.

As a noun inability

is lack of the ability to do something; incapability.

As an adjective undefined is

lacking a definition or value.

As adjectives the difference between contagious and undefined

is that contagious is of a disease, easily transmitted to others while undefined is lacking a definition or value.

As a noun legislator

is someone who creates or enacts laws, especially a member of a legislative body.

As an adjective undefined is

lacking a definition or value.

As a noun forms

is .

As a verb forms

is (form).

As an adjective undefined is

lacking a definition or value.

As a verb stake

is .

As an adjective undefined is

lacking a definition or value.

As a noun epidemiology

is (sciences) the branch of a science dealing with the spread and control of diseases, viruses, concepts etc throughout populations or systems.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between banter and howl

is that banter is good-humoured, playful, typically spontaneous conversation while howl is the protracted, mournful cry of a dog or a wolf, or other like sound.

As verbs the difference between banter and howl

is that banter is to engage in banter or playful conversation while howl is to utter a loud, protracted, mournful sound or cry, as dogs and wolves often do.

As a noun sightseeing

is the practice of going out looking at things; tourism.

As a verb sightseeing

is .

As an adjective undefined is

lacking a definition or value.

As a noun hearer

is (dated) one who hears; a devout listener.

As an adjective undefined is

lacking a definition or value.