It is worth being precise about this distinction, because the two terms are often used interchangeably in popular discourse in ways that blur the important difference between them.

Sustainability

Regeneration

Reduce harm

Reverse harm

Less negative impact

Net positive impact

Preserve what exists

Restore what has been lost

Meet present needs without depleting future capacity

Build future capacity beyond present needs

Grid-connected with renewable inputs

Off-grid; self-generating and self-treating

Efficient resource use

Closed-loop resource cycling

Lower emissions building

Carbon-sequestering building