Yes, captain is a common noun, a word for any captain of anything.
A proper noun is the name of a specific person, place, thing, or a title; for example:
captains'. (apostrophe is after the s)
The captains' bags are in their lockers.
No. Captain is a singular noun.
To make captain into a possessive noun, add an apostrophe and an s, e.g. "The captain's crew were loyal to him".
The possessive form of the singular noun captain is captain's.
example: The captain's cabin is not very fancy.
The possessive form for the noun captain is captain's.
Example: It was your captain's idea to serve a holiday feast.
The possessive form for the singular noun captain is captain's.
example: The mate knocked on the captain's door.
The plural form of the noun captain is captains. The plural possessive form is captains'.
Captain is singular
Captains is plural
Captain's is the singular possessive
Captains' is the plural possessive.
captain's
the captain's ship
The plural form of the noun captain is captains. The plural possessive form is captains'.
The plural possessive noun of molecules is molecules' .
The noun skies is the plural form of the noun sky.The possessive forms are:sky's (singular possessive)skies' (plural possessive)
The plural form for the noun tree is trees.The plural possessive form is trees'.
The possessive form for the plural noun wives is wives'.
The plural possessive noun is racers'.
The noun "branch" is a regular plural noun, a noun that forms its plural by adding "s" or "es". The plural form of branch is "branches".The plural possessive form is branches', a regular plural possessive.
The plural possessive is colonists'.
To change a singular possessive noun to a plural possessive noun, first you must change the noun from a singular noun to a plural noun. The reason for this is that plural nouns can take different forms which will determine how the plural possessive is formed. Examples:A plural noun that ends with the letter s, just add an apostrophe after the ending s (s').singular noun, boy; plural noun, boys; plural possessive boys'An irregular plural noun that does not end with s, add anapostrophes ('s) to the end of the word.singular noun, child; plural noun, children; plural possessive children's
The plural form for the noun leader is leaders. The plural possessive form is leaders'.
The plural form for the noun buzz is buzzes; the plural possessive form is buzzes'.
The plural form for the noun gentleman is gentlemen.The plural possessive form is gentlemen's.