This is the 501st most frequent French word.
photo
A photograph or picture taken by a camera.
Here, 'photo' is used as a noun to refer to a picture captured using a camera.
J'ai pris une photo du coucher de soleil hier soir.
I took a photo of the sunset last night.
In this sentence, 'photo' is a noun describing a specific picture that is to be sent electronically.
Peux-tu m'envoyer la photo par email?
Can you send me the photo by email?
In this example, 'photo' is utilized as a noun referring to a photograph that has a familial context and is framed for display.