white feather vs symbolisation

white feather and symbolisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
white feather	Yes	No	No	No
symbolisation	Yes	No	No	No

As nouns, symbolisation is a hypernym of white feather; that is, symbolisation is a word with a broader meaning than white feather:

white feather: a symbol of cowardice
symbolisation: something visible that by association or convention represents something else that is invisible

Other hypernyms of white feather include symbol, symbolic representation, symbolization.

white feather (noun)	symbolisation (noun)
a symbol of cowardice	the practice of investing things with symbolic meaning
	something visible that by association or convention represents something else that is invisible
	the use of symbols to convey meaning