voice
The writer's personality as it comes through on the page.
tone
The writer's attitude toward the subject or audience in a particular piece.
diction
Word choice.
connotation
The feelings and associations a word carries beyond its dictionary meaning.
register
The level of formality of language (formal, standard, informal, slang).
evocative
Calling up vivid images or feelings in the reader's mind.
cliché
An overused expression that has lost its freshness.
intensifier
A word like very or really that adds emphasis, often weakly.