How can we best understand the dimensionality of comparison?

What are the dimensions of apples and what are the dimensions of oranges? How are they similar, how are they different, how can we refine that understanding to a high degree of accuracy?

Is not a dimension

Tue, Apr 27, 2021

A comparison of apples and oranges occurs when two items or groups of items are compared that cannot be practically compared.

The idiom, comparing apples and oranges, refers to the apparent differences between items which are popularly thought to be incomparable or incommensurable, such as apples and oranges. The idiom may also be used to indicate that a false analogy has been made between two items, such as where an apple is faulted for not being a good orange.

https://en.wikipedia.org/wiki/Apples_and_oranges

In common language usage, "fruit" normally means the fleshy seed-associated structures of a plant that are sweet or sour, and edible in the raw state, such as apples, bananas, grapes, lemons, oranges, and strawberries. On the other hand, in botanical usage, "fruit" includes many structures that are not commonly called "fruits", such as bean pods, corn kernels, tomatoes, and wheat grains.[2][3] The section of a fungus that produces spores is also called a fruiting body.[4]

https://en.wikipedia.org/wiki/Fruit