1.
attire, outfit, dress, appearance
The way someone is dressed or the overall appearance they present. A somewhat literary or elegant word for clothing and personal presentation.
2.
guise, outward appearance, look
The outward appearance or aspect of something, often used figuratively for seasonal changes in nature or the appearance of a place.
Usage
A somewhat literary and elegant word. Sense 1 is a refined way to say "outfit" or "attire." Sense 2 is often used poetically for seasonal changes in scenery. The verb form is 装う (to dress up, to assume an appearance).