Refers to a person's outward appearance, often with a nuance of bearing or demeanor. Slightly formal or literary.
His appearance had the calm composure of a scholar.
He was so friendly that you wouldn't guess it from his looks.
風貌 describes a person's overall appearance including build and manner, whereas 人相 focuses specifically on the face.
外見 simply means how something looks from outside, while 風貌 refers more specifically to a person's overall appearance and bearing, often with a literary tone.
風貌 refers specifically to a person's physical looks or facial appearance, while 風情 (in its 'appearance' sense) refers more broadly to the overall air or manner someone gives off.
Standard kanji form; commonly used in news and literary contexts.
Search-only kanji form; not used in normal writing.
Rarely used kanji form; 丰 is an uncommon variant of 貌.
Compound of 風 (ふう, 'appearance, style') and 貌 (ぼう, 'face, looks'). The kanji 貌 is sometimes replaced by the variant 丰 in rare usage.