This is the 338th most frequent Russian word.
михаил
The Russian word "Михаил" is a male given name meaning "Michael."
The word 'Михаил' is a proper noun used as the subject of the sentence, referring to a person named Mikhail.
Михаил учит нас русскому языку.
Mikhail teaches us Russian language.
The word 'Михаила' is the genitive case of the name 'Михаил', used here to show possession (Mikhail's table).
У Михаила на столе лежит книга.
On Mikhail's table lies a book.
The word 'Михаила' is the accusative case of the name 'Михаил', functioning as the direct object of the verb 'видел' (saw).