The difference between Common and Peculiar

When used as nouns, common means mutual good, shared by more than one, whereas peculiar means that which is peculiar.

When used as adjectives, common means mutual, whereas peculiar means out of the ordinary.

Common is also verb with the meaning: to communicate (something).

check bellow for the other definitions of Common and Peculiar

Common as an adjective:

Mutual; shared by more than one.

Examples:

"The two competitors have the common aim of winning the championship."

"Winning the championship is an aim common to the two competitors."
Common as an adjective:

Occurring or happening regularly or frequently; usual.

Examples:

"It is common to find sharks off this coast."
Common as an adjective:

Found in large numbers or in a large quantity.

Examples:

"Sharks are common in these waters."
Common as an adjective:

Simple, ordinary or vulgar.
Common as an adjective (grammar):

In some languages, particularly Germanic languages, of the gender originating from the coalescence of the masculine and feminine categories of nouns.
Common as an adjective (grammar):

Of or pertaining to common nouns as opposed to proper nouns.
Common as an adjective:

Vernacular, referring to the name of a kind of plant or animal, i.e., common name vs. scientific name.
Common as an adjective (obsolete):

Profane; polluted.
Common as an adjective (obsolete):

Given to lewd habits; prostitute.

Common as a noun:

Mutual good, shared by more than one.
Common as a noun:

A tract of land in common ownership; common land.
Common as a noun:

The people; the community.
Common as a noun (legal):

The right of taking a profit in the land of another, in common either with the owner or with other persons; so called from the community of interest which arises between the claimant of the right and the owner of the soil, or between the claimants and other commoners entitled to the same right.

Common as a verb (obsolete):

To communicate (something).
Common as a verb (obsolete):

To converse, talk.
Common as a verb (obsolete):

To have sex.
Common as a verb (obsolete):

To participate.

Examples:

"rfquotek Sir Thomas More"
Common as a verb (obsolete):

To have a joint right with others in common ground.

Examples:

"rfquotek Johnson"
Common as a verb (obsolete):

To board together; to eat at a table in common.

Peculiar as an adjective:

Out of the ordinary; odd; strange; unusual.

Examples:

"The sky had a peculiar appearance before the storm."

"It would be rather peculiar to see a kangaroo hopping down a city street."
Peculiar as an adjective:

Common or usual for a certain place or circumstance; specific or particular.

Examples:

"Kangaroos are peculiar to Australia."
Peculiar as an adjective (dated):

One's own; belonging solely or especially to an individual; not shared or possessed by others.
Peculiar as an adjective (dated):

Particular; individual; special; appropriate.

Peculiar as a noun:

That which is peculiar; a sole or exclusive property; a prerogative; a characteristic.
Peculiar as a noun (UK, canon law):

an ecclesiastical district, parish, chapel or church outside the jurisdiction of the bishop of the diocese in which it is situated.