n.

1. 强调，重视，重点[C][U][（+on/upon）]
   They put emphasis on quality rather than on quantity.

   他们重质不重量。

2. 【语】加强语气
3. 【语】重音[U]
   In the word "employ" the emphasis is on the second syllable.

   “employ”这个字中，重音在第二个音节上。

n.

1. special importance, value, or prominence given to something.
2. stress laid on a word or words in speaking.