As nouns the difference between vacuum and ultravacuum

is that vacuum is (rare|chiefly|netherlands) while ultravacuum is a near-perfect vacuum; ie an almost or fully complete absence of matter, especially a gas at very low pressure.

As nouns the difference between football and svarabhakti

is that football is the kind of ball used in american football while svarabhakti is epenthesis of a vowel, as in the football chant (engerland) for (england).

As nouns the difference between chant and svarabhakti

is that chant is type of singing done generally without instruments and harmony while svarabhakti is epenthesis of a vowel, as in the football chant (engerland) for (england).

As a verb chant

is to sing, especially without instruments, and as applied to monophonic and pre-modern music.

As a noun pass

is pass (between mountains ).

As a verb repass is

to pass (back) again, especially in the opposite direction; to return.

As an adverb again

is (label) back in the reverse direction, or to an original starting point.

As a preposition again

is (obsolete or dialectal) against.

As a verb repass is

to pass (back) again, especially in the opposite direction; to return.

As verbs the difference between return and repass

is that return is to come or go back (to a place or person) while repass is to pass (back) again, especially in the opposite direction; to return.

As a noun return

is the act of returning.

As an adjective proditorious

is (obsolete) treacherous, traitorous.

As an adverb proditoriously is

(obsolete) in a proditorious manner; treacherously, traitorously.

As nouns the difference between party and demoparty

is that party is party (social gathering for fun) while demoparty is (demoscene) a party organised by and for the demoscene, typically involving socializing, computer programming, and competitions.

As nouns the difference between demoscene and demoparty

is that demoscene is the informal international community that produces and watches demos (audiovisual computer programs) while demoparty is a party organised by and for the demoscene, typically involving socializing, computer programming, and competitions.

As nouns the difference between computer and demoparty

is that computer is calculator, computer while demoparty is (demoscene) a party organised by and for the demoscene, typically involving socializing, computer programming, and competitions.