What is the meaning of Identity_function?

5-letter words containing

• 5-letter words containing k

• 5-letter words containing s

• 5-letter words containing l

• 5-letter words containing m

• 5-letter words containing c

5-letter words starting with

• 5-letter words starting with o

• 5-letter words starting with o

• 5-letter words starting with a

• 5-letter words starting with g

• 5-letter words starting with n

5-letter words in the middle

• 5-letter words in the middle l

• 5-letter words in the middle u

• 5-letter words in the middle w

• 5-letter words in the middle o

• 5-letter words in the middle l

5-letter words ending with

• 5-letter words ending with i

• 5-letter words ending with o

• 5-letter words ending with p

• 5-letter words ending with a

• 5-letter words ending with g

5-letter words excluding

• 5-letter words excluding e

• 5-letter words excluding u

• 5-letter words excluding u

• 5-letter words excluding u

• 5-letter words excluding n