Noun Based on form - Concrete Def: all the things appear in our eyes. Ex: table, desk, stone, tree, people, etc - Abstract Def: all the thing we can NOT see in our eyes. Ex: dream, purpose, love, etc. Based on it quantity - Countable Def: all the things are able to be counted. Ex: tree, table, desk, person, girl, man, etc. (1) Singular Def: all of the things are written as root word. Ex: tree, table, girl, etc. (2) Plural Def: all of the things are written by adding (s) or something different written. Depends on the plural form (1) Regular Def: nouns are changed by adding (s). Ex: tree -> tree(s), table -> table(s) (2) Irregular Def: nouns are changed by different written form Ex: woman -> wom(e)n, man -> m(e)n - Uncountable Def: all the things aren't able to be counted. Ex: water, sugar, money, etc.
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