形容詞 higher-:

1. advanced in complexity or elaboration
   同義詞：higher
2. of education beyond the secondary level
   同義詞：higher

形容詞 high-:

1. greater than normal in degree or intensity or amount
   同義詞：high
2. (literal meaning) being at or having a relatively great or specific elevation or upward extension (sometimes used in combinations like `knee-high')
   同義詞：high
3. standing above others in quality or position
   同義詞：eminent, high
4. used of sounds and voices; high in pitch or frequency
   同義詞：high, high-pitched
5. happy and excited and energetic
   同義詞：high, in high spirits
6. (used of the smell of meat) smelling spoiled or tainted
   同義詞：gamey, gamy, high
7. slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana)
   同義詞：high, mellow