Edit this page Talk0. The Greek alphabet is used extensively in mathematics and the physical sciences to stand for well known constants, variables, functions, and so forth.
The question calls for examples of irony. This answer provides many examples of irony (each bulleted item is an example of irony), and explains the different ways in which they are ironic. The most common form of irony is when the spoken words do not convey the underlying meaning.
Long experience of someone or something can make one so aware of the faults as to be scornful. For example, Ten years at the same job and now he hates it-familiarity breeds contempt. The idea is much older, but the first recorded use of this expression was in Chaucer's Tale of Melibee (c. 1386).