高等【こうとう】
high class, high grade
平等【びょうどう】
equality, impartiality, evenness
対等【たいとう】
equality (esp. of status), equal footing, equal terms
一等【いっとう】
first class, first rank, first grade, first place, first prize, one degree, one level, one grade, most, best
高等学校【こうとうがっこう】
senior high school, high school
不平等【ふびょうどう】
inequality, unfairness
同等【どうとう】
equality, equal, same rights, same rank, equivalence
優等生【ゆうとうせい】
honor student, honours student, model student, prize pupil
等級【とうきゅう】
grade, class, degree, rank, rating, order, points, magnitude
等価【とうか】
equivalence, equal value, parity, (logical) equivalence
等分【とうぶん】
division into equal parts, equal parts
劣等感【れっとうかん】
inferiority complex, sense of inferiority
等しい【ひとしい】
equal, identical, the same, no different (from), just like, equivalent
上等【じょうとう】
superior, first-class, excellent, top quality, (that's) just fine!, bring it on!