Great question! I work on Bitkey, so I can provide some clarification. 

The term 'Secure Element' typically refers to chips found in smart cards that pass security certifications such as Common Criteria. They have a variety of security features such as tamper resistance, secure key storage, etc. 

Our processor isn't a Secure Element in that sense, but it has a very similar set of security features. Happy to discuss further if you have any questions!