component vs substance

component and substance both are nouns.

Word	Noun	Adjective	Verb	Adverb
component	Yes	No	No	No
substance	Yes	No	No	No

As nouns, substance is a hyponym of component; that is, substance is a word with a more specific, narrower meaning than component:

component (noun)	substance (noun)
an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system	the real physical matter of which a person or thing consists
an abstract part of something	a particular kind or species of matter with uniform properties
something determined in relation to something that includes it	the property of holding together and retaining its shape
	the idea that is intended
	the choicest or most essential or most vital part of some idea or experience
	content communicating a message; what something is about
	considerable capital (wealth or income)
	material of a particular kind or constitution