element vs substance

element and substance both are nouns.

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

As nouns, substance is a hypernym of element; that is, substance is a word with a broader meaning than element:

element: any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
substance: the real physical matter of which a person or thing consists

As nouns, substance is a hypernym of element; that is, substance is a word with a broader meaning than element:

element: one of four substances thought in ancient and medieval cosmology to constitute the physical universe
substance: the real physical matter of which a person or thing consists

element (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
the most favorable environment for a plant or animal	the property of holding together and retaining its shape
a straight line that generates a cylinder or cone	the idea that is intended
the situation in which you are happiest and most effective	the choicest or most essential or most vital part of some idea or experience
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter	content communicating a message; what something is about
one of four substances thought in ancient and medieval cosmology to constitute the physical universe	considerable capital (wealth or income)
	material of a particular kind or constitution