The word clouds is a common plural noun. It requires no apostrophe.
The clouds looked puffy.
If the word clouds has a possession or belonging, it needs an apostrophe.
The clouds' shapes reminded me of animals.
The possessive form of the noun sky is sky's(the sky's color).
The possessive form of the plural noun stars is stars'.example: The stars' dressing rooms were very luxurious.
The possessive form of the singular, uncountable noun spacecraft is spacecraft's.Example: The spacecraft's crew arrived safely.
No, clouds form by condensation.
The possessive form of Mars is Mars'
The singular possessive form is word's, for example the word's definition.
possessive form of the word Cathi: Cathi's
possessive form of the word glass: glass'
possessive form of the word Congress: Congress'
possessive form for the word holders: holders'
the possessive form of the word Cathie: Cathie's
The possessive form of the word dictionary is dictionary's.
The possessive form of the word fairy is fairy's.
The possessive form is Lindbergh's.
The possessive form is weaver's.
The possessive form for the interrogative pronoun who is whose.
The possessive form for the word 'word' is word's.