nitrogen

As a letter n

is the letter n with a tilde.

As a noun nitrogen is

nitrogen (symbol: n).

As nouns the difference between air and nitrogen

is that air is while nitrogen is nitrogen (symbol: n).

As a noun nitrogen

is nitrogen (symbol: n).

As an adjective undefined is

lacking a definition or value.

As nouns the difference between mojito and nitrogen

is that mojito is a cuban cocktail made from rum, lime, sugar, mint etc while nitrogen is nitrogen (symbol: n).

In uncountable terms the difference between nitrogen and helium

is that nitrogen is molecular nitrogen (N₂), a colorless, odorless gas at room temperature while helium is a colorless and inert gas, and the second lightest chemical element (symbol He) with an atomic number of 2 and atomic weight of 4.002602.

In countable terms the difference between nitrogen and helium

is that nitrogen is a specific nitrogen within a chemical formula, or a specific isotope of nitrogen while helium is a form or sample of the element.

As nouns the difference between nitrogen and flour

is that nitrogen is a chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067 while flour is powder obtained by grinding or milling cereal grains, especially wheat, and used to bake bread, cakes, and pastry.

As a verb flour is

to apply flour to something; to cover with flour.

As nouns the difference between azide and nitrogen

is that azide is while nitrogen is nitrogen (symbol: n).

As a proper noun phosphorus

is a name sometimes used for hesperus, the personification in greek mythology of the planet venus.

As a noun nitrogen is

nitrogen (symbol: n).

As nouns the difference between fertilizer and nitrogen

is that fertilizer is a natural substance that is used to make the ground more suitable for growing plants while nitrogen is a chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067.