logic vs ontology

logic

noun
  • Any system of thought, whether rigorous and productive or not, especially one associated with a particular person. 

  • It's hard to work out his system of logic. 

  • The study of the principles and criteria of valid inference and demonstration. 

  • The mathematical study of relationships between rigorously defined concepts and of mathematical proof of statements. 

  • The part of a system (usually electronic) that performs the boolean logic operations, short for logic gates or logic circuit. 

  • A method of human thought that involves thinking in a linear, step-by-step manner about how a problem can be solved. Logic is the basis of many principles including the scientific method. 

  • A formal or informal language together with a deductive system or a model-theoretic semantics. 

verb
  • To engage in excessive or inappropriate application of logic. 

  • To apply logical reasoning to. 

  • To overcome by logical argument. 

adj
  • logical 

ontology

noun
  • The theory of a particular philosopher or school of thought concerning the fundamental types of entity in the universe. 

  • A logical system involving theory of classes, developed by Stanislaw Lesniewski (1886-1939). 

  • A structure of concepts or entities within a domain, organized by relationships; a system model. 

  • The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist; the study of being qua being. 

  • In a subject view, or a world view, the set of conceptual or material things or classes of things that are recognised as existing, or are assumed to exist in context, and their interrelations; in a body of theory, the ontology comprises the domain of discourse, the things that are defined as existing, together with whatever emerges from their mutual implications. 

How often have the words logic and ontology occurred in a corpus of books? (source: Google Ngram Viewer )