Some words which describe a particular mood are
paranoid
indifferent
weird
strange
funny
talkative
quiet
calm
passionate
flirtatious
delicate
chirpy
talkative
angry
puzzled
happy
sad
bold
giggly
jovial
mellow
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I think you're confusing tone with mood. Tone is the attitude of the author, and is automatic whenever you write to any audience. There are no special "tone words." Of course, there are no special "mood words" either -- authors use many words to make a mood.
Some words that rhyme with "good" are food, mood, and wood. Some words that rhyme with "evil" are weevil, retrieval, and upheaval.
deep dark midnight spooky gnarled creepy eerie owls screeched
If you mean synonyms, other words for a "sad mood" are: depressed, unhappy, blue, cheerless, dejected, down in the dump, down, forlorn, gloomy, glum, grieved, heart-broken, hurting, in doldrums, low-spirited, melancholy, morbid, morose, out of sorts, pensive, sick at heart, somber, sorrowful, troubled, weeping, and wistful.
Some of them are mood altering.
emotionfeelingBy the way, these are the only possibilities that I think mean mood!
The conflict helps to tell the mood, but it's not the only thing. Mood can be created in many ways. The words that the author chooses - their style - is a major contributor to mood. Words like dark, dismal, spooky, eerie, or isolated might create a scary mood, for example. Setting can also help with mood. A romance story set in a spooky abandoned warehouse might not have the right mood.
Truth
The subjunctive mood expresses doubt, desire, possibility, or hypothetical situations, rather than time. It is used to convey uncertainty or subjectivity. Words alone may not always effectively convey the specific nuances of mood, which is why the subjunctive mood exists as a grammatical tool to serve this purpose.
hood, mood
Single syllable