di·a·logue
– noun
1. conversation between two or more persons.
2. the conversation between characters in a novel, drama, etc.
3. an exchange of ideas or opinions on a particular issue, esp. a political or religious issue, with a view to reaching an amicable agreement or settlement.
4. a literary work in the form of a conversation.
–verb
5. to converse.
6. to discuss areas of disagreement frankly in order to resolve them.
log·ic
– noun
1. the science that investigates the principles governing correct or reliable inference.
2. a particular method of reasoning or argumentation.
3. the system or principles of reasoning applicable to any branch of knowledge or study.
4. reason or sound judgment, as in utterances or actions.
5. convincing forcefulness; inexorable truth or persuasiveness.
ple·o·nasm
– noun
1. the use of more words than are necessary to express an idea; redundancy.
2. a redundant word or expression.
tau·tol·o·gy
– noun
1. needless repetition of an idea, esp. in words other than those of the immediate context, without imparting additional force or clearness.
2. an empty or vacuous statement composed of simpler statements in a fashion that makes it logically true whether the simpler statements are factually true or false.
3. a compound propositional form all of whose instances are true, as “A or not A.”