“Ethics” is plural; “ethic” is singular. People usually use the term in the plural (“ethics”), as in, “Ethics are an important part of any successful business.” However, “ethic” (singular) is also seen on occasion: “He has a great work ethic.”
Ethics', the apostrophe goes after the 's' in plurals when showing possession
The singular possessive form for the noun Phillip is Phillip's.The plural form for the noun Phillip is Phillips; the plural possessive form is Phillips'.The singular possessive form for the noun Phillips is Phillips's.The plural form for the noun Phillips is Phillipses; the plural possessive form is Phillipses'.
The noun 'honesty' is an uncountable noun, a word for a concept, it has no plural form.The possessive form is honesty's. Example:Honesty's reward is not monetary.
The possessive form of the plural noun Greeks is Greeks'.example: Many elements of the ancient Greeks' culture is still in fashion today.
The possessive form for the Marx Brothers is the Marx Brothers'.example: The Marx Brothers' nonsense is still popular today..
The correct plural noun phrase is the Marx brothers.When using the surname to refer to two or more family members, the surname is singular, functioning as an attributive noun (a noun used as an adjective to describe another noun, also called a noun adjunct). The noun phrase "Marx brothers" is a plural noun phrase, two or more brothers.The correct plural, possessive form is Marx brothers', indicating that something belongs jointly to the brothers.Example: The Marx brothers' career began in vaudeville.
"Ethics" is uncountable and so has no plural.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The correct form is "its" for the possessive form in the plural. "Its" is used for both the singular and plural possessive forms, without an apostrophe.
The plural is briefs. The plural possessive is briefs'.
The plural is lads. The plural possessive is lads'.
The plural is trollies. The plural possessive is trollies'.
The plural is relatives. The plural possessive is relatives'.
The plural is stations. The plural possessive is stations'.
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
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 form is homes; the plural possessive is homes'.