Momentum

Fits when energy or activity rises sharply over a short period

Careful A surge may fade as quickly as it appears, unlike sustained momentum.

Fits when personal determination supplies sustained forward effort

Careful Drive belongs to a person or group, while momentum can exist in the sequence of results.

Fits when visible advances have been made against a difficult problem

Careful Headway measures gains but not the self-reinforcing energy they create.

Suits reassuring language that emphasizes continuing movement

Careful The phrase is broader and less precise about acceleration or accumulating force.

Fits when movement toward the goal itself is enough to report

Careful Progress can be slow or fragile and does not imply increasing force.

Fits when an idea, campaign, or product is gaining adoption or practical hold

Careful Traction concerns external uptake and may ignore the team's internal energy.

Fits when uninterrupted work across time is what must be protected

Careful Continuity prevents a break but says nothing about increasing speed or confidence.

Fits when a specific event supplies the initial push to act

Careful Impetus starts movement; momentum is the force that builds after movement begins.