(10) A science is knowledge classified for the purpose of discovering general truths.
(11) An art is a skillful application of knowledge and power to practice.
“A science teaches us to know, an art to do.”
(12) A fact is a single, individual, particular thing made or done.
A truth is general knowledge which exactly conforms to the facts.
A truth may be a definition, rule, law, or principle.
(13) A fact as opposed to hypothesis is an occurrence which is true beyond doubt.
An hypothesis is a supposition advanced to explain an occurrence or a group of occurrences.
A theory is a general hypothesis which has been partly verified.
(14) Theory as opposed to practice means general knowledge, while practice involves the putting into operation one’s theories.