This is the 18122nd most frequent Russian word.
хороша
"Хороша" means "good" or "beautiful" (feminine form).
Here, 'хороша' is used as a predicate adjective in a feminine form describing the noun 'жизнь' (life), which is feminine singular.
Жизнь хороша, когда ты здоров.
Life is good when you are healthy.
'Хороша' is used here to describe physical appearance in a feminine singular subject, 'она' (she).
Она хороша собой и умна.
She is beautiful and smart.
The term 'хороша' serves as a descriptive adjective for the feminine singular noun 'погода' (weather).