favoured vs preferred

favoured and preferred both are adjectives.

Word	Noun	Adjective	Verb	Adverb
favoured	No	Yes	No	No
preferred	No	Yes	No	No

As adjectives, favoured and preferred are synonyms defined as:

favoured and preferred: preferred above all others and treated with partiality

Other synonyms of favoured include best-loved, favored, favorite, favourite, pet, preferent.

favoured (adjective)	preferred (adjective)
preferred above all others and treated with partiality	more desirable than another
	preferred above all others and treated with partiality