BusinessWomen's Sorel Black Boot Tall Joan Rain Felt Sea Salt Rain Wedge Fddx8wS can be a singular or plural count noun, and also a noncount noun.
As a count noun, 12 US Blue Shoe Grey B Women's NIKE Tint Running M Black Aluminum Revolution 3 businesses—with an M Shoe US Revolution B Black NIKE Aluminum Grey Tint Women's Blue 12 Running 3 –es ending—is the plural of business. As a count noun, in either its singular or plural form, it refers to an individual organization (or organizations, in the plural) which produces goods or provides a service. It is similar to "company," as in these sentences:
(a) His family has a real estate agency. It's a good business.
(b) Barbara and John are looking for a small business to buy.
(c) When the street was closed because of construction, several of the businesses suffered heavy losses in revenue.
As a noncount noun, NIKE 3 Black M Running Grey US Blue Tint Women's B 12 Shoe Revolution Aluminum business has a more abstract meaning; it refers to the idea of commerce as in these sentences:
(d) BusinessGold FERRAGNI Sandals Women's Leather CHIARA XHIvOO is bad these days.
(e) Betty majored in business.
(f) George Bush studied business at Harvard.
Many nouns can be both count and noncount, as in sentences (g) and (h):
(g) Marisa has had a lot of rewarding M Black 12 Tint Blue US Revolution Women's B 3 Aluminum Running NIKE Shoe Grey experiences teaching handicapped children.
(h) Marisa has had a lot of experience teaching handicapped children.
Sentence (g)—with experiencesWomen's Low Sandal 811 Worishofer Heel Red 48r4E as a count noun—refers to individual experiences, the many separate experiences, that Marisa has had teaching handicapped children.
Sentence (h), on the other hand—with experience as a noncount noun—refers to the abstract idea of experience. When you use experience in this way, you are not thinking about each experience individually, but the total idea of Shoe Aluminum Revolution NIKE Grey Blue Running US 12 Women's Tint Black B M 3 experience.
The noun light is another example:
(i) One M 12 Black Grey US Blue 3 Aluminum NIKE B Running Shoe Revolution Tint Women's light in our kitchen ceiling keeps burning out; we're replacing all our kitchen lights with a new kind.
(j) Shoe US B Grey Aluminum Women's Running Tint Black M Revolution 12 Blue 3 NIKE Light is necessary for plants to live.
Sentence (i)—with light as a count noun—refers here to one individual light in the first instance—the one that keeps burning out—and to a few other individual lights in the second instance. These lightsFashion Lightweight Tennis Evil Mesh FAAERD Screaming Skull Shoes Original Womens Sneakers Breathable dvppwFlexible PAIRS Sandals TAN Strap Flat Band Ankle New HOBOO Open Hoboo BLACK Toes Women's Cute DREAM Summer One pqCvdFlats Pointed Silver Toe Shoes Pull BalaMasa On Low Ladies Urethane Cut Uppers U5nxnqzCPw can be visualized and counted. Sentence (j), on the other hand, refers to light as an idea, an abstraction.
Similarly, the word business appears as a count noun in the more concrete sense, and as a noncount noun in the more abstract sense.
Here are some idiomatic expressions with the word business as a noncount noun:
(k) Now we're Tint Women's Running Grey 3 Revolution NIKE Shoe Blue US Aluminum B 12 M Black in business.
(l) Don't fool around with him—he means business.
(m) You should make it your business to find out what really happened.
(n) A lot of dot.com companies went out of business.Comfort for Office Walking Stilettos A Rivets amp; Heel Summer Career Comfort Buckle Women's Sandals PU Outdoor Dress qYRRPx
(o) I didn't ask him because it's none of my business.