tau·tol·o·gy n
1. a redundant repetition of a meaning in a sentence or idea using different words
2. an instance of redundant repetition
3. a proposition or statement that, in itself, is logically true

tel·e·ol·o·gy n
1. the study of ultimate causes in nature
2. an approach to ethics that studies actions in relations to their ends or utility
3. any activity that tends towards the achievement of a goal

me·ton·y·my n
a figure of speech in which an attribute of something is used to stand for the thing itself, such as “laurels” when it stands for “glory” or “brass” when it stands for “military officers”