What is the meaning of Grammatical_case?

5-letter words containing

• 5-letter words containing c

• 5-letter words containing k

• 5-letter words containing s

• 5-letter words containing t

• 5-letter words containing o

5-letter words starting with

• 5-letter words starting with l

• 5-letter words starting with n

• 5-letter words starting with e

• 5-letter words starting with i

• 5-letter words starting with a

5-letter words in the middle

• 5-letter words in the middle e

• 5-letter words in the middle e

• 5-letter words in the middle t

• 5-letter words in the middle a

• 5-letter words in the middle i

5-letter words ending with

• 5-letter words ending with i

• 5-letter words ending with l

• 5-letter words ending with o

• 5-letter words ending with p

• 5-letter words ending with k

5-letter words excluding

• 5-letter words excluding k

• 5-letter words excluding r

• 5-letter words excluding i

• 5-letter words excluding o

• 5-letter words excluding n