It is Hypertext Transfer protocol.
It is Not Secure and unreliable.
HTTP URL Begin With http://.
It uses port 8o by default.
It is subject to man in the middle & eavesdropping attacks.
It is Hypertext Transfer protocol with Secure.
It is secure & reliable .
HTTPS URL begin with https://.
It was use port 443 by default.
It is designes to withstand such attackes & is considered secure against such attacks.
I hope this is helpful. Tell me if you know more than that.