What's the difference between discursus and ratiocination?

Discursus

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Definition:

• (n.) Argumentation; ratiocination; discursive reasoning.

Example Sentences:

Ratiocination

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Definition:

• (n.) The process of reasoning, or deducing conclusions from premises; deductive reasoning.

Example Sentences:

• (1) And anger isn’t something so easily ratiocinated.