Is ava and evelyn the same name?

Im having a girl soon and thought i was set. I just haven't been able to settle on many names. My mil is evelyn and not to be mean i don't want a name similar to hers. To me they sound diff but i guess they are somehow related to ea other? I don't want name regret. Do you think she would think it was like her name? My husband says the names don't sound alike. Help? I think she looks like an ava too from the ultra sound photo.

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