Efficient

Fits when broad competence is safer than a claim about resource use

Careful This says the person can do the job, not that they minimize waste while doing it.

Fits when orderly preparation and easy retrieval prevent confusion

Careful Neat systems can be elaborate and slow, so organization alone is not the result-to-resource ratio.

Fits when achieving the intended outcome matters regardless of cost

Careful An effective method may be slow or wasteful; efficient adds economy of means.

Fits when the amount of valuable output is the main measure

Careful High output can consume excessive time or resources, so it does not prove efficiency.

Fits when unnecessary steps have been removed from a process

Careful Use it for the process or design, not automatically for the person operating it.

Fits when low financial or material cost is the decisive advantage

Careful Cheap use of resources may sacrifice speed or quality, which efficient should not imply.

Fits when a systematic sequence makes the work dependable

Careful Methodical work can deliberately take more time, especially where caution outranks speed.

Fits when formal prose should emphasize prompt completion

Careful Speed is only one resource; the word does not cover material, cost, or effort.