As a verb coheadline

is to headline (a musical performance, etc) together.

As a noun coheadliner is

one who coheadlines.

In zoology|lang=en terms the difference between cassid and cossid

is that cassid is (zoology) any member of the cassidae while cossid is (zoology) any member of the cossidae.

As nouns the difference between cassid and cossid

is that cassid is (zoology) any member of the cassidae while cossid is (anglo-indian) a courier or messenger or cossid can be (zoology) any member of the cossidae.

As adjectives the difference between hattiest and tattiest

is that hattiest is superlative of hatty while tattiest is superlative of tatty.

As prepositions the difference between uppon and upon

is that uppon is an archaic spelling of upon while upon is being above and in contact with another.

As an adverb upon is

being the target of an action.

As a verb sued

is (sue).

As an adjective qued is

bad; evil.

As a noun qued is

evil; harm.

As adjectives the difference between oleraceous and oleaceous

is that oleraceous is relating to potherbs while oleaceous is of or pertaining to the plant family Oleaceae.

As verbs the difference between sailed and bailed

is that sailed is (sail) while bailed is (bail).

As nouns the difference between sixers and fixers

is that sixers is while fixers is .

As nouns the difference between carids and scarids

is that carids is plural of lang=en while scarids is plural of lang=en.

As nouns the difference between nunations and nunnations

is that nunations is while nunnations is .