Yes, both potatoes and whipped cream are common nouns, words for any potatoes and any whipped cream.
A proper noun is a noun is the name of a specific person, place, thing, or a title; for example:
common noun
The compound noun 'ice cream parlour' is a common noun, a general word for a store or restaurant the sells ice cream.A proper noun is the name of a specific person, place, or thing. A proper noun for the common noun 'ice cream parlour' is the name of an ice cream parlour, such as Mitchell's Homemade Ice Cream in Cleveland Ohio.
Common noun.
When John came to the party, he brought cake and ice cream. Common nouns: party, cake, ice cream Abstract noun: party Concrete nouns: John, cake, ice cream Proper noun: John Compound noun: ice cream I even threw in a pronoun, just for fun: he
The possessive form of the plural noun potatoes is potatoes'.example: The potatoes' texture is just perfect.
Potatoes
The noun 'cream' is a mass noun, also called an uncountable noun. The noun 'cream' is a word for a substance. A substance can't be counted. Amounts of cream are expressed as some cream, a lot of cream, a cup of cream, a pint of cream, etc.
The plural form for the noun potato is potatoes.
In the noun phrase 'a pocket of potatoes', the noun pocket is functioning as a collective noun.The standard collective noun for 'potatoes' is 'a sack of potatoes'.Since collective nouns are an informal part of language, any noun that suits the context of a group of people or things can function as a collective noun, including 'a pocket of potatoes'.
The noun 'ice cream' is an uncountable (mass) noun, a word for a substance. The plural form 'ice creams' is a word for 'types of' or 'kinds of' ice cream; for example, a menu of ice creams, a selection of ice creams, a variety of ice creams, etc.
Whip can be a verb or a noun. Verb -- Slaves were often whipped by their owners. -- past tense Noun -- The cattle man cracked his whip.
proper beacause it issaying what type of ice cream it is