As a noun oxygen

is a chemical element (symbol o) with an atomic number of 8 and relative atomic mass of 159994.

As an adjective preaerobic is

(biology) describing life on earth that evolved before there was oxygen in the atmosphere.

As nouns the difference between lipid and saccharolipid

is that lipid is lipid while saccharolipid is (organic chemistry) any of several types of lipid that contain a carbohydrate moiety.

As nouns the difference between carbohydrate and saccharolipid

is that carbohydrate is (organic chemistry|nutrition) a sugar, starch, or cellulose that is a food source of energy for an animal or plant; a saccharide while saccharolipid is (organic chemistry) any of several types of lipid that contain a carbohydrate moiety.

As nouns the difference between cravat and regatte

is that cravat is a wide fabric band worn as a necktie by men, having long ends hanging in front; like an ascot tie while regatte is or regatte can be a cravat tied in such a way that two ends of material dangle from the knot.

As nouns the difference between material and regatte

is that material is (matter)Matter which may be shaped or manipulated, particularly in making something while regatte is plural of regatta.

As an adjective material

is having to do with matter; consisting of matter.

As a verb material

is to form from matter; to materialize.

Niacinamide is a synonym of nicotinamide.

As nouns the difference between nicotinamide and niacinamide

is that nicotinamide is the amide of nicotinic acid (or niacin) while niacinamide is the amide of niacin.

As nouns the difference between protein and optineurin

is that protein is protein while optineurin is (protein) a protein that is associated with glaucoma.

As nouns the difference between glaucoma and optineurin

is that glaucoma is (pathology) an eye disease or disorder that is defined as a characteristic optic neuropathy, or disease of the optic nerve, possibly, if untreated, leading to damage of the optic disc of the eye and resultant visual field loss due to lack of communication between the retina and the brain, which can lead to blindness while optineurin is (protein) a protein that is associated with glaucoma.

As a verb activated

is past tense of activate.

As an adjective overactivated is

activated too often, or to too great a degree.

As a proper noun life

is (christian science) god.

As an adjective preaerobic is

(biology) describing life on earth that evolved before there was oxygen in the atmosphere.