To some extent.
As I understand it, we primarily digest meat by breaking it down chemically in our stomachs, but primarily digest plants by letting them slowly ferment in our intestines. And by "us" I mean "all animals" here. As far as I'm aware, most herbivores don't have strong enough stomach acid to digest meat properly, and most carnivores don't have long enough intestines to digest most plant matter properly, particularly things like grass. But each can get *something* out of both meat and plants, as far as I'm aware, as long as it's a small enough quantity not to make them sick or whatever.
And some species, like wolves and coyotes, that are primarily carnivores will happily eat fruit, and can even live primarily off of fruit for a while. But, in terms of how you need to digest it, fruit is a lot closer to meat than most leaves are.