I consider objects as nouns , methods as verbs and interfaces as adjectives (of course, this analogy is simplified, but often works enough).
: Serializable , , , , . : " ". : " ", : " ".
Federico answer, "CAN-DO".
, . , .
, , , . , , , .
, , . . .
, .
, , - HAS-A. , , , IS-A. HAS-A .
- , . . : . , .
, , . . : , .