Question

What do play and toy have in common when you add suffixes

Answer 1

If we add the suffix - 's' ; we get the following :---
     PLAYS - Ramesh plays with his toys everyday.
     TOYS - Ramesh plays with his toys everyday.

If we add the suffix - 'ful' ; we get the following :---
   PLAYFUL - Ramesh is playful by nature.
   TOYFUL - His room is almost toyful.

    

Answer 2

I think the suffix 'ing' could be added to make the words 'playing' and 'toying'.

Application of these words in sentences would be as follows:

1) The boy has been playing all day.
2) He has been toying with idea of preparing for the exams with his friend.