What is the difference between iphone, smartphone & android phone?

What is the difference between iphone, smartphone & android phone?

An iPhone and an Android phone are both smartphones.
iPhone comes from Apple (both Operating System - iOS - and the Phone).

Android is actually an Operating System and android phone refer to phones that run on this operating system. The operating system comes from Google and phone hardware comes from different vendors (Samsung, LG, HTC etc.). All vendors include their specialized applications (apps) in the phone.

There are other smartphones too. Such as Nokia's Symbian phones, Windows Phones, Meego OS, Blackberry phones etc.

But iOS and Android has the most market coverage these days. And Windows phone has a lot potential.
Thanks.

Iphone and android are both smartphones and they have their os version different

Android phone and iPhone belongs to smartphone. And iPhone and android phone differs on their OS. Thanks!