• Intellect
• Absence or want of Intellect
• Thought
• Incogitancy (Absence or want of thought)
• Idea (Object of thought)
• Topic (Subject of thought)

• Curiosity (The desire of knowledge)
• Incuriosity (Absence of curiosity)
• Attention
• Inattention
• Care (Vigilance)
• Neglect
• Inquiry (Subject of Inquiry Question)
• Answer
• Experiment
• Comparison
• Incomparability (Lack of comparison)
• Discrimination (results of comparison 1)
• Indiscrimination (results of comparison 2)
• Identification (results of comparison 3)
• Measurement

• Evidence (On one side)
• Counter Evidence (Evidence on the other side, on the other hand)
• Qualification
• Possibility
• Impossibility
• Probability
• Improbability
• Certainty
• Uncertainty

• Reasoning,
• Intuition. Sophistry (The absence of reasoning)
• Demonstration
• Confutation

• Judgment (Conclusion)
• Discovery (Result of search or inquiry)
• Misjudgment
• Overestimation
• Underestimation
• Belief
• Unbelief. Doubt
• Credulity
• Incredulity
• Assent
• Dissent
• Knowledge
• Ignorance
• Scholar
• Ignoramus
• Truth (Object of knowledge)
• Error
• Maxim
• Absurdity
• Intelligence, Wisdom
• Imbecility. Folly
• Sage
• Fool
• Sanity
• Insanity
• Madman

to the Past

• Memory
• Oblivion

to the Future

• Expectation
• Inexpectation
• Disappointment (Failure of expectation)
• Foresight
• Prediction
• Omen
• Oracle

• Supposition
• Analogy
• Imagination

• Meaning (Idea to be conveyed)
• Unmeaningness (Absence of meaning)
• Intelligibility
• Unintelligibility
• Equivocalness (Having a double sense)
• Metaphor
• Interpretation
• Misinterpretation
• Interpreter

• Manifestation
• Latency. Implication
• Information
• Correction (Correct an error of information; distinguish from correcting a flaw or misbehavior)
• Concealment
• Disclosure
• Ambush . (Means of concealment)
• Publication
• News
• Secret
• Messenger
• Affirmation
• Negation
• Teaching
• Misteaching
• Learning
• Teacher
• Learner
• School
• Veracity
• Falsehood
• Deception
• Untruth
• Dupe
• Deceiver
• Exaggeration

Natural Means

• Indication
• Record
• Obliteration (Suppression of sign)
• Recorder
• Representation
• Misrepresentation
• Painting
• Sculpture
• Engraving
• Artist

Conventional Means

• Language
• Letter
• Word
• Neologism
• Nomenclature
• Misnomer
• Phrase
• Grammar
• Solecism
• Style
• Perspicuity
• Obscurity
• Conciseness
• Diffuseness
• Vigor
• Feebleness
• Plainness
• Ornament
• Elegance
• Inelegance
• Voice
• Aphony
• Speech
• Stammering (Imperfect Speech)
• Loquacity
• Taciturnity
• Allocution
• Response
• Conversation
• Soliloquy
• Writing
• Printing
• Correspondence
• Book
• Description
• Dissertation
• Compendium
• Poetry
• Prose
• The Drama