The plural form of the noun wool is wools.
The possessive form of the of the plural noun wools is wools'.
example: The wools' prices have gone up, but the cottons are the same.
Note: The plural forms of the uncountable nouns 'wool' and 'cotton' are used for 'types of' or 'kinds of'.
The possessive form is 'the sheep's wool'.
The possessive form of the noun sheep is sheep's.The noun sheep is both singular and plural.Examples:I made this rug from a single sheep's wool. (singular)All of our sheep's wool is sold to mills. (plural)
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is lads. The plural possessive is lads'.
The plural is relatives. The plural possessive is relatives'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is inches. The plural possessive is inches'.
Studies' is the plural possessive of study.
The plural possessive is pals'.