Explanation

The prayer is performed in congregation to seek pardon for the deceased and all dead Muslims

No Sajdas are in Salat-e-Janaza

Namaz-e-Janazah is performed by standing in line

4 Takbeers are in Namaz-e-Janaza 

Namaz e Janaza is Farz e Kuffiya

while 

There are the following three prayers have no Azan (آذان)

Eid-ul-Fitr

Eid-ul-Azha

Janaza