Generalized Stereotype / Stereotypical Generalization

"ster·e·o·type n.

1. A conventional, formulaic, and oversimplified conception,
opinion, or image.

2. One that is regarded as embodying or conforming to a set image or type.

gen·er·al·i·za·tion –noun

1. the act or process of perceiving similarity or relation
between different stimuli, as between words, colors, sounds,
lights, concepts or feelings; the formation of a general notion.

...a stereotype negates individuality
and does not leave room for interpretation.

One person in a group is exactly the same as all the rest.

A generalization, though,
is using a general idea about a group for further inquiry."

Source

Same thing only different?