ColossiansOne

Side by side, from the sources

Mars vs Ares

These two are identified with one another in the record, which is not the same as being the same figure. Equated by the Romans, though Mars carries agricultural and boundary functions Ares never had.

Deity · Roman · c. 500 BCE

Mars

also called Mavors, god Mars, Roman god Mars, Mars (mythology)

Father of Romulus and second only to Jupiter in the state cult — an agricultural god as much as a martial one, and not simply the Greek Ares renamed.

Alignment
Disputed
Rank
God of War and the Fields
First attested
The Aeneid · c. 19 BCE
Named there as
Mars
Texts naming it
3
Powers attributed
3
80attestedRoman

Deity · Greek · c. 700 BCE

Ares

also called Mars (Roman), Ἄρης

War as slaughter rather than strategy — disliked by the Greeks who worshipped him, and rehabilitated entirely by the Romans as Mars.

Alignment
Disputed
Rank
God of War
First attested
The Iliad · c. 750 BCE
Named there as
Ares
Texts naming it
3
Powers attributed
3
90attestedGreekRoman

Where do they actually overlap?

Texts naming both

None. The two never appear in the same text in this corpus, which is worth knowing before accepting any confident claim that they are one figure.

Powers credited to both

Common questions

Are Mars and Ares the same figure?

These two are identified with one another in the record, which is not the same as being the same figure. Equated by the Romans, though Mars carries agricultural and boundary functions Ares never had. ColossiansOne records the link rather than asserting the identity: where texts disagree about whether two names denote one figure, the disagreement is what gets shown.

Which is older, Mars or Ares?

Ares is the older name: first attested around c. 700 BCE, against c. 500 BCE for Mars. Where the two dates are far apart, that gap is the whole reason the pair is worth comparing.

Do any texts name both Mars and Ares?

No text in this corpus names both. That is not proof they were considered the same figure, but it is why the identification has to be traced through the scholarship rather than read off a page.