Difference between software development interfacing terms: API, Web API, REST API, Web Services, SOAP Services

API vs Web API vs REST API vs Web Services vs SOAP Services

I came across this question in interviews many times. Also, I found that many people get confused when someone asks them to explain any one of these terms, they start mixing the terms.

I have gone through many contents on the web, but I never found any page where all these terms are explained well at a single location.

Can anyone explain these terms and how they are interrelated?