attainment – n. a skill or ability gained by practice or training
proportion – n. an amount that is a part of a whole
emphasize – v. to give special attention to something
motivate – v. to give (someone) a reason for doing something
disadvantage – n. something that causes difficulty : something that makes someone or something worse or less likely to succeed than others
contradict – v. to say the opposite of (something that someone else has said)