There isn't one single word that perfectly captures the concept of "cell parts". However, depending on the context, you could use:

General terms:

* Organelles: This is the most accurate term, referring to the specialized structures within a cell that perform specific functions.

* Cellular components: This is a broader term that includes both organelles and other structures like the cell membrane, cytoplasm, and cytoskeleton.

* Cellular structures: Similar to "cellular components", this term emphasizes the physical parts of the cell.

More specific terms:

* Subcellular components: Emphasizes the smaller parts of the cell.

* Cellular inclusions: Refers to non-living components within the cell, like granules or crystals.

The best choice depends on the specific situation and the level of detail you want to convey.