The three main categories of fashion are haute couture,ready-to-wear and mass market.
not sure
Diesel, gas and stream?
The three main categories of lipids are triacylglycerols, diacylglycerides, and steroids.
Running, Jumping, and Throwing.
It is how they are formed.
[object Object]
Sedimentary, metamorphic and igneous.
but
The three main categories of elements on the periodic table are metals, metalloids, and nonmetals.
i don't know tell me pls about that !
The three main categories of nouns are:common or propersingular or pluralabstract or concreteSome other categories of nouns are:count or non-count (mass nouns)possessivecollectivecompoundgerundsmaterialattributive
upgrade, exchange components and add devices