noun, noun or participle which takes 'suru', intransitive verb
getting up early; early rising
Refers to the act or habit of waking up early in the morning. Can be used as a noun or as a suru-verb (早起きする).
毎朝早起きして散歩するのが日課です。
Getting up early every morning and taking a walk is my daily routine.
明日は早いから、今夜は早く寝て早起きしよう。
Tomorrow is an early start, so let's go to bed early tonight and get up early.
noun
early riser; early bird
Refers to a person who habitually gets up early. Often used in set phrases like 早起きは三文の徳.
彼は子供の頃から早起きで、朝が弱い人を見ると不思議に思う。
He has been an early riser since childhood and finds it strange when people are not morning people.