General synonyms:
* Piece
* Part
* Bit
* Section
* Portion
* Shard
* Scrap
* Remnant
* Splinter
More specific synonyms:
* Chunk: (for a large fragment)
* Sliver: (for a thin, narrow fragment)
* Debris: (for broken pieces or remnants)
* Residue: (for a small amount left behind)
* Vestige: (for a trace or remnant of something that has disappeared)
* Snippet: (for a short piece of text or sound)
Literary synonyms:
* Shard: (for a fragment of something ancient or broken)
* Remnant: (for something left over after a loss or destruction)
* Vestigial: (for something that is a remnant of something that has been lost or changed)
The best synonym to use will depend on the specific context and the nuance you want to express.