decorum

As a noun decorum

is decorum.

As an adjective rite is

humid, wet.

As nouns the difference between decorum and protocol

is that decorum is appropriate social behavior; propriety while protocol is the minutes, or official record, of a negotiation or transaction; especially a document drawn up officially which forms the legal basis for subsequent agreements based on it.

As a verb protocol is

to make a protocol of.

In uncountable terms the difference between decorum and seemliness

is that decorum is appropriate social behavior; propriety while seemliness is the property of being seemly, appropriateness of conduct or behavior.

In countable terms the difference between decorum and seemliness

is that decorum is a convention of social behavior while seemliness is the result or product of being seemly.

As an adjective ethereal

is pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; otherworldly; as, ethereal space; ethereal regions.

As a noun decorum is

decorum.

As nouns the difference between decorum and tree

is that decorum is decorum while tree is a large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age).

As a verb tree is

to chase (an animal or person) up a tree.

As a noun decorum

is appropriate social behavior; propriety.

As an adjective gregarious is

describing one who enjoys being in crowds and socializing.

As nouns the difference between decorum and concern

is that decorum is appropriate social behavior; propriety while concern is that which affects one's welfare or happiness.

As a verb concern is

to relate or belong to; to have reference to or connection with; to affect the interest of; to be of importance to.