In linguistics, a count noun (also countable noun) is a noun that can be modified by a numeral and that occurs in both singular and plural forms, and that co-occurs with quantificational determiners like every, each, several, etc. A mass noun has none of these properties. It can't be modified by a numeral, occur in singular/plural, or co-occur with quantificational determiners.
Examples
Below are examples of all the properties of count nouns holding for the count noun chair, but not for the mass noun furniture.
Some determiners can be used with both mass and count nouns, including "some", "a lot (of)", "no". Others cannot: "few" and "many" are used with count items, "little" and "much" with mass. (On the other hand, "fewer" is reserved for count and "less" for mass (see Fewer vs. less), but "more" is the proper comparative for both "many" and "much".)
Grammatical distinction
The concept of a "mass noun" is a grammatical concept and is not based on the innate nature of the object to which that noun refers. For example, "seven chairs" and "some furniture" could refer to exactly the same objects, with "seven chairs" referring to them as a collection of individual objects but with "some furniture" referring to them as a single undifferentiated unit. However, some abstract phenomena like "fun" and "hope" have properties which make it difficult to refer to them with a count noun.
Podcasts:
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by Big Time Rush
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by No Turning Back
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by Big Tent Revival
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by George Huff
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by Tommy Shaw
Count On You
by: Big Time RushFeaturing: Jordin Sparks
Hm yeah
Ooha
No ooh
Now I'm about to give you my heart
But remember this one thing (yeah)
I've never been in love before so you gotta go easy on me
I heard love is dangerous
Once you fall you never get enough
But the thought of you leaving ain't so easy for me (nooo)
Don't hurt me, Desert me
Don't give up on me
(What would I want to do that for?)
Don't use me, take advantage of me
Make me sorry I ever counted on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
Understand I've been here before
Thought I found someone I finally could adore
But you failed my test
Gotta know her better
So I wasn't the only one
But I would later put my trust in you
Baby you can put your trust in me
Just like you count to 3
You can count on me
And you're never gonna see
No numbers in my pocket
Anything I'm doing girl I drop it for you
'Cause you're the one I'm giving my heart to but I gotta be the only one
Don't hurt me, Desert me
Don't give up on me
What would I want to do that for?
Don't use me, take advantage of me
Make me sorry I ever counted on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to the 5
Baby I'm counting on you
I really hope you understand
That if you wanna take my hand
Then you should put yours over my heart
I promise to be careful from the start
I'm trusting you with loving me
Very very carefully
Never been so vulnerable
Baby I'll make you comfortable
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to 5
Why would I wanna do that?
1, 2, 3, 4 to the 5
Baby I'm counting on you
1, 2, 3, 4 to the 5
Now I'm about to give you my heart
So remember this one thing
I've never been in love before