English morphological rules detail how words relate to other words. Thus, my best assumption would be because BOLDEST is an adjective whereas BOLDLY is an adverb.
Based on the century of creation, II Gesu belongs to the late renaissance but significantly marks the influence of the italian baroque architecture(the ceiling is heavily ornate but the outside facade is closer to protestant/renaissance)
If you are talking about Anime or Cartoons then its Anime because the dresses, body structure are very detailed while cartoons are not as detailed as Anime