The structure of the vocal tract is very important in forming human voices.

'Agreement' and 'synonym' sound similar, but their meanings are completely different.

He found the answer to the problem using logical derivation.

He derived the correct answer from a complex mathematical problem.

He is my peer.

She is concerned about her waistline, so she exercises every day.

All his actions are in linkage with his thoughts.

Their actions are closely linked.

He went to school through the underpass.

She dedicated her virginity and became a nun.