A cell is the basic unit of living organisms that is capable of reproducing itself exactly. That is, although eukaryotic cells (such as plant cells and animal cells) contain components, which are called organelles, those components do not reproduce themselves independently of the cell of which they are a part.
Cytoplasm is a jelly-like substance that surrounds the nucleus of a
cell and is sometimes described as "the cell-matrix". It holds the organelles
in place within the cell.
N.B. associated adjective is "cytoplasmic".
See also the functions of cell organelles.