Ok, if I say "Her face is triangle*".
I believe that the sentence is wrong logically because "triangle" is never an adjective but a noun. The face is a face and thus can not be a shape, right?
I think it is ok to say "Her face shape is a triangle*" because "triangle is a shape". A face shape is a shape, so that sentence is OK.
But if we say "Her face is square*", then that is OK because "square" is an adjective with the meaning "having a square shape".
I don't understand why we have "Square" (noun) & "Square" (adj), but "Triangle" (noun) but no "Triangle" (adj).
However, Google returns with 440 results for "Her face is triangle".
And saying "Her face is triangular" is OK right?
I ask this question because I am not sure whether I am correct.