common

adjective (commoner, commonest)

• 1occurring, found, or done often; prevalent:salt and pepper are the two most common seasonings it’s common for a woman to be depressed after giving birth
• (of an animal or plant) found or living in relatively large numbers; not rare.
• ordinary; of ordinary qualities; without special rank or position:the dwellings of common people a common soldier
• (of a quality) of a sort or level to be generally expected:common decency
• of the most familiar type:the common or vernacular name
• denoting the most widespread or typical species of an animal or plant:the common blue spruce

• 2showing a lack of taste and refinement; vulgar.

• 3shared by, coming from, or done by more than one:the two republics' common border problems common to both communities
• belonging to, open to, or affecting the whole of a community or the public:common land
• Mathematics belonging to two or more quantities.

• 4 Grammar (in Latin and certain other languages) of or denoting a gender of nouns that are conventionally regarded as masculine or feminine, contrasting with neuter.
• (in English) denoting a noun that refers to individuals of either sex (e.g., teacher).

• 5 Prosody (of a syllable) able to be either short or long.

• 6 Law (of a crime) of relatively minor importance:common assault

noun

• 1a piece of open land for public use, especially in a village or town.

• 2(in the Christian Church) a form of service used for each of a group of occasions.