Formal
Part of speech: noun
Definition: formalin
Part of speech: adjective
Definition: being in accord with established forms official relating to the form or structure of something ceremonial Organized; well-structured and planned.
Example sentence: I believe what matters are facts and behaviours in our daily life rather than formal gestures.
Logical
Part of speech: adjective
Definition: In agreement with the principles of logic.Reasonable.Of or pertaining to logic.
Example sentence: Before success comes in any man's life, he's sure to meet with much temporary defeat and, perhaps some failures. When defeat overtakes a man, the easiest and the most logical thing to do is to quit. That's exactly what the majority of men do.