Differentiation (noun)

1. The action or process of recognizing or showing a difference between two or more things.
2. The distinguishing of cells or tissues from their initial state during development.

Origin:

Origin: early 17th century: from medieval latin differentiatio(n-), from differentiare ‘to differentiate’, from latin differentia ‘difference’.

Examples:

1. The differentiation between the two species was difficult to discern.
2. The scientist studied the differentiation of cells to better understand the growth and development of organisms.
3. The curriculum offered a wide range of courses to allow for differentiation of instruction.