This is the 9726th most frequent Japanese word.
菅
"菅" (suge) refers to a type of sedge or reed plant in English.
In this sentence, '菅' is used as part of the proper noun '菅野', which is a name typically used in Japanese.
菅野さんは忙しいです。
Mr. Sugano is busy.
Here, '菅' refers to 'reeds', a type of plant, showing its noun usage in a descriptive phrase.
菅の花は春に咲きます。
Reed flowers bloom in spring.
'菅' functions as part of the proper noun '菅首相', referring to the Prime Minister's surname.