candle flame vs visible light

candle flame and visible light both are nouns.

Word	Noun	Adjective	Verb	Adverb
candle flame	Yes	No	No	No
visible light	Yes	No	No	No

As nouns, visible light is a hypernym of candle flame; that is, visible light is a word with a broader meaning than candle flame:

candle flame: the light provided by a burning candle
visible light: (physics) electromagnetic radiation that can produce a visual sensation

Other hypernyms of candle flame include light, visible radiation.

candle flame (noun)	visible light (noun)
the light provided by a burning candle	(physics) electromagnetic radiation that can produce a visual sensation