petroleum

As nouns the difference between chemical and petroleum

is that chemical is any specific chemical element or chemical compound while petroleum is petroleum.

As an adjective chemical

is (label) of or relating to alchemy.

As nouns the difference between petroleum and terms

is that petroleum is petroleum while terms is .

As nouns the difference between glycerin and petroleum

is that glycerin is glycerine while petroleum is petroleum.

As a noun petroleum

is petroleum.

As an adjective undefined is

lacking a definition or value.

As a verb grapes

is .

As a noun petroleum is

petroleum.

As nouns the difference between bitumen and petroleum

is that bitumen is bitumen while petroleum is petroleum.

As nouns the difference between patrol and petroleum

is that patrol is (military) a going of the rounds along the chain of sentinels and between the posts, by a guard, usually consisting of three or four men, to insure greater security from attacks on the outposts while petroleum is petroleum.

As a verb patrol

is to go the rounds along a chain of sentinels; to traverse a police district or beat.

As a noun petroleum

is petroleum.

As a proper noun orimulsion is

an emulsion of bitumen in water, used as an industrial fuel.