* Adjective: This is the most common usage. It describes something that is able to work well with something else.
* Example: "These two operating systems are compatible."
* Noun: It can refer to something that is compatible with something else.
* Example: "The new printer is a compatible with my computer."
* Verb: It's less common but can mean "to be compatible with."
* Example: "This software compatibles with all major operating systems."
To determine the part of speech, you need to look at the context of the sentence.