What is the meaning of Supplementary_relative_clause?

5-letter words containing

• 5-letter words containing h

• 5-letter words containing e

• 5-letter words containing v

• 5-letter words containing s

• 5-letter words containing k

5-letter words starting with

• 5-letter words starting with i

• 5-letter words starting with t

• 5-letter words starting with s

• 5-letter words starting with h

• 5-letter words starting with c

5-letter words in the middle

• 5-letter words in the middle z

• 5-letter words in the middle g

• 5-letter words in the middle v

• 5-letter words in the middle a

• 5-letter words in the middle k

5-letter words ending with

• 5-letter words ending with c

• 5-letter words ending with s

• 5-letter words ending with d

• 5-letter words ending with o

• 5-letter words ending with a

5-letter words excluding

• 5-letter words excluding r

• 5-letter words excluding n

• 5-letter words excluding s

• 5-letter words excluding u

• 5-letter words excluding e