I have a sentence. Can you check if the underlined word can function without an article? Is the sentence O.K.? The dictionary says it is both a mass noun and singular noun but has no mention of it being an uncountable noun.

What color is grass? Green
Yes, it's fine that way, when referring to the overall concept of "grass."

If you want to talk about the grass in your own front yard - a particular bit of grass - you use an article. "My grass is so brown." Or "Now that I fertilze, the grass in my yard is so green." You cannot say "a grass," though you can say "a blade of grass" which would refer to a single stalk of grass.
It sounds OK to me. You're talking about grass in general. Then you can say: "I shouldn't have mown the grass this morning", meaning "the grass that grows in my garden.
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Thank you, Pienne and GG.

Can anyone give me some more simple examples of the case of a term being used generally and that being OK without the article? Help me to get the concept?? clearly.
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Cows go moo.

Footballers get paid too much.

Politicians never tell the truth.

Translators always see two sides of a story.


It's got nothing to do with countables, whenever we use a noun in general, the article isn't used.