favourable vs advantageous

favourable and advantageous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
favourable	No	Yes	No	No
advantageous	No	Yes	No	No

As adjectives, favourable and advantageous are synonyms defined as:

Other synonyms of favourable include favorable.

favourable (adjective)	advantageous (adjective)
(of winds or weather) tending to promote or facilitate	giving an advantage
encouraging or approving or pleasing	appropriate for achieving a particular end; implies a lack of concern for fairness
giving an advantage
presaging or likely to bring good luck or a good outcome