"Αυτός τρώει."

Translation: He eats.

[Hojinkie]

What is the relationship between τρώει and τρώγει? And I'm assuming whatever the reason, it's the same reason for τρώω/τρώγω and τρως/τρώγεις.

[Vassilis3]

«τρώγω» is an older form, however it is still in use and survives in the passive voice of the verb «τρώγομαι»