What is the meaning of Higher-order_function?

5-letter words containing

• 5-letter words containing l

• 5-letter words containing o

• 5-letter words containing i

• 5-letter words containing e

• 5-letter words containing t

5-letter words starting with

• 5-letter words starting with e

• 5-letter words starting with c

• 5-letter words starting with o

• 5-letter words starting with e

• 5-letter words starting with t

5-letter words in the middle

• 5-letter words in the middle r

• 5-letter words in the middle l

• 5-letter words in the middle k

• 5-letter words in the middle i

• 5-letter words in the middle l

5-letter words ending with

• 5-letter words ending with i

• 5-letter words ending with l

• 5-letter words ending with p

• 5-letter words ending with i

• 5-letter words ending with i

5-letter words excluding

• 5-letter words excluding u

• 5-letter words excluding i

• 5-letter words excluding o

• 5-letter words excluding y

• 5-letter words excluding c