As adjectives the difference between tumulous and turbulent

is that tumulous is full of small hills or mounds; hilly; tumulose while turbulent is violently disturbed or agitated; tempestuous, tumultuous.

As prepositions the difference between above and down

is that above is physically over; on top of; worn on top of, as clothing while down is from the higher end to the lower of.

As adverbs the difference between above and down

is that above is directly overhead; vertically on top of while down is from a higher position to a lower one; downwards.

As adjectives the difference between above and down

is that above is of heaven; heavenly while down is depressed, feeling low.

As nouns the difference between above and down

is that above is heaven while down is hill, rolling grassland.

As a verb down is

to drink or swallow, especially without stopping before the vessel containing the liquid is empty.

As a proper noun Down is

one of the counties of Northern Ireland.

As nouns the difference between contention and opinion

is that contention is struggle, contest, strife, argument, debate while opinion is a belief that a person has formed about a topic or issue.

As a verb opinion is

to have or express as an opinion.

As adverbs the difference between farther and beyond

is that farther is while beyond is farther along or away.

As an adjective farther

is (far) of or pertaining to being distant, or of greater distance in degree or of extension in time.

As a preposition beyond is

further away than.

As a noun beyond is

the unknown.

Ig is likely misspelled.

Ig has no English definition.

As a noun ex

is an ex-husband, ex-wife or ex-partner.

As a verb ex

is to delete; to cross out.

As nouns the difference between petrochemicals and biochemical

is that petrochemicals is while biochemical is a chemical substance derived from a biological source.

As an adjective biochemical is

of, or relating to biochemistry.

As verbs the difference between debug and tune

is that debug is to search for and eliminate malfunctioning elements or errors in something, especially a computer program or machinery while tune is to modify a musical instrument so that it produces the correct pitches.

As a noun tune is

a melody.

As verbs the difference between tuning and debugging

is that tuning is present participle of lang=en while debugging is present participle of lang=en.

As a noun tuning

is action of the verb to tune.

As nouns the difference between rhyming and opposites

is that rhyming is rhyme while opposites is plural of lang=en.

As a verb rhyming

is present participle of lang=en.

As nouns the difference between salt and oregano

is that salt is a common substance, chemically consisting mainly of sodium chloride (NaCl), used extensively as a condiment and preservative while oregano is a herb of the mint family, Origanum vulgare, having aromatic leaves.

As an adjective salt

is salty; salted.

As a verb salt

is to add salt to.

As an initialism SALT

is strategic Arms Limitation Talks.