As nouns the difference between function and vitality

is that function is what something does or is used for while vitality is the capacity to live and develop.

As a verb function

is to have a function.

As adjectives the difference between functional and servicable

is that functional is in good working order while servicable is .

As a noun functional

is (mathematics) a function that takes a function as its argument; more precisely: a function y''=''f''(''x'') whose argument ''x varies in a space of (real valued, complex valued) functions and whose value belongs to a monodimensional space an example: the definite integration of integrable real functions in a real interval.

As an adjective optimal

is the best, most favourable or desirable, especially under some restriction.

As an initialism integral is

(space|esa) (a satellite of the european space agency).

As adjectives the difference between infrared and electric

is that infrared is having the wavelength in the infrared while electric is electric.

As a noun infrared

is electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm.

As verbs the difference between excreted and secreted

is that excreted is (excrete) while secreted is (us) (secret) or secreted can be (secrete).

As adjectives the difference between baffled and aghast

is that baffled is thoroughly confused, puzzled while aghast is terrified; struck with amazement; showing signs of terror or horror.

As verbs the difference between sound and optimized

is that sound is to produce a sound while optimized is past tense of optimize.

As an adjective sound

is healthy.

As an adverb sound

is soundly.

As an interjection sound

is yes; used to show agreement or understanding, generally without much enthusiasm.

As a noun sound

is a sensation perceived by the ear caused by the vibration of air or some other medium.

As a proper noun Sound

is the strait that separates Zealand (an island of Denmark) from Scania (part of Sweden); also sometimes called by the Danish name, Øresund.

As adjectives the difference between dialectic and diametric

is that dialectic is dialectical while diametric is directly opposite.

As a noun dialectic

is any formal system of reasoning that arrives at a truth by the exchange of logical arguments.

As a verb vitalized

is (vitalize).

As an adjective functional is

in good working order.

As a noun functional is

(mathematics) a function that takes a function as its argument; more precisely: a function y''=''f''(''x'') whose argument ''x varies in a space of (real valued, complex valued) functions and whose value belongs to a monodimensional space an example: the definite integration of integrable real functions in a real interval.

As nouns the difference between vitality and functional

is that vitality is the capacity to live and develop while functional is (mathematics) a function that takes a function as its argument; more precisely: a function y''=''f''(''x'') whose argument ''x varies in a space of (real valued, complex valued) functions and whose value belongs to a monodimensional space an example: the definite integration of integrable real functions in a real interval.

As an adjective functional is

in good working order.