Cells to tissues are like individuals to communities.
All those tissues form different organs and a body – just like communities (corporations, institutions, all sorts of organizations, etc.) fulfilling different functions and creating a society.
Cells age. So do we. Cells can be renewed while performing the same duty. It’s just like human beings reproducing and dying.
Cells evolve, so we are more capable than the creatures hundreds of millions of years ago. People learn, so civilizations grow and build on their own.