Common has 14 different meanings across 3 categories:
Noun · Adjective · Proper Noun
Mutual good, shared by more than one.
"The two neighbors signed a mutual agreement to share the cost of repairing the fence between their properties."
In plain English: A common noun is just a regular name for a person, place, thing, or idea that isn't specific to one particular example.
"He is not used to having such rude behavior in common among his friends."
Usage: Use "common" as a noun only in the specific phrase "the common," which refers to land owned or used collectively by a community. Avoid using it as a standalone noun to mean mutual benefit, as that usage is archaic and rarely understood in modern conversation.
To communicate (something).
"We need to common our findings with the rest of the team before the deadline."
In plain English: To make something common means to cause it to happen often or become widespread.
"Common sense tells us that we should lock our doors at night."
Usage: As a verb, common means to make something widely known or accepted by sharing it with many people. You might say a rumor was commoned through social media, though this usage is archaic and rarely found in modern speech compared to the adjective form.
belonging to or participated in by a community as a whole; public
"for the common good"
"common lands are set aside for use by all members of a community"
having no special distinction or quality; widely known or commonly encountered; average or ordinary or usual
"the common man"
"a common sailor"
"the common cold"
"a common nuisance"
"followed common procedure"
"it is common knowledge that she lives alone"
"the common housefly"
"a common brand of soap"
being or characteristic of or appropriate to everyday language
"common parlance"
"a vernacular term"
"vernacular speakers"
"the vulgar tongue of the masses"
"the technical and vulgar names for an animal species"
lacking refinement or cultivation or taste
"he had coarse manners but a first-rate mind"
"behavior that branded him as common"
"an untutored and uncouth human being"
"an uncouth soldier--a real tough guy"
"appealing to the vulgar taste for violence"
"the vulgar display of the newly rich"
Mutual; shared by more than one.
"After discussing their overlapping interests, they realized that both parties held a common passion for vintage photography."
In plain English: Common means something that many people have, see, or do all the time.
"This type of tomato is very common in summer gardens."
Usage: Use common to describe something that is ordinary or widely encountered, not reserved for special occasions. It does not mean mutual unless you are specifically referring to traits or feelings shared between two or more parties.
A surname.
"My neighbor's name is Common, and he was born in Chicago."
The word "common" entered English from Old French and Latin, where it originally meant "public" or "shared by all." Its roots trace back to a Proto-Indo-European concept of things held in common through exchange.