Ashton and Michael Kutcher Are This Type of Twins

This page is the CodyCross answer for the clue below from Architectural Styles, Group 1174, Puzzle 4 (Sydney Opera House).

Question is: Ashton and Michael Kutcher Are This Type of Twins

and the answer is: FRATERNAL

Word Meaning:

FRATERNAL — Of or pertaining to a brother or brothers.

Definitions from Wiktionary.