cellule; cellula
Technical biological term for a small cell or compartment; rare in everyday language.
I observed the plant's cellules under a microscope.
small room; small tatami room
Refers to a compact room, often a traditional Japanese room with tatami mats; can be used in real estate or inn contexts.
I was shown to a small room in the inn.
floret; small cluster
Commonly used for the individual florets of broccoli, cauliflower, etc.; also for small bunches of fruit like grapes.
Separate the broccoli into florets and boil them.