What is the meaning of Unit_of_language?

5-letter words containing

• 5-letter words containing l

• 5-letter words containing a

• 5-letter words containing n

• 5-letter words containing o

• 5-letter words containing a

5-letter words starting with

• 5-letter words starting with z

• 5-letter words starting with i

• 5-letter words starting with j

• 5-letter words starting with t

• 5-letter words starting with o

5-letter words in the middle

• 5-letter words in the middle i

• 5-letter words in the middle o

• 5-letter words in the middle n

• 5-letter words in the middle t

• 5-letter words in the middle c

5-letter words ending with

• 5-letter words ending with m

• 5-letter words ending with e

• 5-letter words ending with n

• 5-letter words ending with o

• 5-letter words ending with d

5-letter words excluding

• 5-letter words excluding n

• 5-letter words excluding o

• 5-letter words excluding e

• 5-letter words excluding a

• 5-letter words excluding e