What foods fit into more than one food group?

Classically legumes. As these "vegetables" like peas, lentils and beans often fit under the vegetable food group but also the protein food group due to their high protein content.

Related Questions

What food fits into more than one food group?

Legumes. Examples include beans and peas, both of which are often either classified under vegetable and/or proteins. Realize that depending on who you talk to many semantics can be evoked. As peas are botanically actually a fruit! It's not worth getting too caught up in this stuff. Read more...