Words

Concrete and specific.

Choosing

Use the plainest word that is precise. Long words are not more professional, and technical terms are worth it only when they save the reader a sentence of explanation.

Utilise means use. Commence means start.
Concrete beats abstract: a number, a name, an example.

Nominalisations

Verbs turned into nouns drain energy: make an assessment, provide assistance, reach a decision. Turning them back shortens the sentence and restores the action.