I am reading about this stuff, and I have found clear definitions of thermocouples and thermistors online, eg on Wikipedia. But then I also found something different, e.g. what they at AdaFruit just call an "analogue temperature sensor" (link). It is called TMP36, from Analogue Devices (link).
What is this category called? If I have a name for it I can find general advice and information on whether this is the way I want to go.
Do they work somewhat like thermistors or thermocouples or in an entirely different way?
I am a hobbyist, if possible please consider this in your answer by not making it more complex than necessary.