The noun choir is a singular noun; the plural form is choirs.
Example: The choirs of three local churches will be performing at the ceremony.
Choir's is the possessive form of the noun.
The singular possessive form is heart's; the plural possessive form is hearts'.
The plural of rose is roses. The plural possessive is roses'.
The plural possessive is governesses'.
Possessive for sofa is sofa's. Plural for sofa is sofas. Plural possessive is sofas'.
The plural form of the noun deaconess is deaconesses.The plural possessive form is deaconesses'.Example: The deaconesses' daughters are in the choir.
The possessive form of choir is choir's.
Choir's is the possessive form of the noun.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is inches. The plural possessive is inches'.
The plural possessive of "Father" is, "Fathers"