essential

As adjectives the difference between essential and optimal

is that essential is necessary while optimal is the best, most favourable or desirable, especially under some restriction.

As a noun essential

is a necessary ingredient.

As adjectives the difference between inevitable and essential

is that inevitable is inevitable; unavoidable while essential is necessary.

As a noun essential is

a necessary ingredient.

As adjectives the difference between summary and essential

is that summary is concise, brief or presented in a condensed form while essential is necessary.

As nouns the difference between summary and essential

is that summary is an abstract or a condensed presentation of the substance of a body of material while essential is a necessary ingredient.

As adjectives the difference between innovative and essential

is that innovative is characterized by the creation of new ideas or things while essential is necessary.

As a noun essential is

a necessary ingredient.

As adjectives the difference between essential and elementar

is that essential is necessary while elementar is .

As a noun essential

is a necessary ingredient.

As nouns the difference between essential and product

is that essential is a necessary ingredient while product is a commodity offered for sale.

As an adjective essential

is necessary.

As adjectives the difference between viral and essential

is that viral is (virology) of or relating to a biological virus while essential is necessary.

As nouns the difference between viral and essential

is that viral is (marketing) a video, image or text spread by "word of mouth" on the internet or by e-mail for humorous, political or marketing purposes while essential is a necessary ingredient.

As nouns the difference between general and essential

is that general is general while essential is a necessary ingredient.

As an adjective essential is

necessary.

As nouns the difference between essential and exemption

is that essential is a necessary ingredient while exemption is an act of exempting.

As an adjective essential

is necessary.

As adjectives the difference between sufficient and essential

is that sufficient is equal to the end proposed; adequate to wants; enough; ample; competent; as, while essential is necessary.

As a determiner sufficient

is the smallest amount needed.

As a noun essential is

a necessary ingredient.