1.
inseparable part, inevitable companion
Something that naturally or inevitably accompanies something else. Used to express that a certain thing is an expected or unavoidable part of a situation.
付き物 expresses that something is a natural or unavoidable companion to something else.
Common patterns
Usage
Used for things considered a natural, expected, or inseparable accompaniment to something else; the companion thing is not necessarily unwelcome, though it is often accepted with some resignation.