melodious

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective melodious is

having a pleasant melody or sound; tuneful.

As an adjective melodious

is having a pleasant melody or sound; tuneful.

As a verb melodize is

to compose or play melodies.

As adjectives the difference between melodious and unmelodious

is that melodious is having a pleasant melody or sound; tuneful while unmelodious is not melodious.

As adjectives the difference between melodious and euharmonic

is that melodious is having a pleasant melody or sound; tuneful while euharmonic is pleasingly melodious or harmonious — applied especially to the euharmonic organ invented by Henry Ward Poole (1825-1890), in whose design mathematical principles of harmony were employed.

Songful is a synonym of melodious.

As adjectives the difference between melodious and songful

is that melodious is having a pleasant melody or sound; tuneful while songful is tending toward, or having the character of, song.