Question

Difference 1.cement 2.glue 3.gum 4.lock

Answer 1

1 cement i think soo

Answer 2

cement is powder substance used for making buildings,houses etc....it is mixed with water ,sand and Stones and the mixture is used with bricks to make walls....

glue is a sticky adhesive used for pasting two or more things together....it can be both temporary and permanent....it is also used in books , copies ,plates,furniture etc....

glue and gum are the same thing

lock is device made of metal used to close doors and cases ......it also has a key which is used to open it.....

hope my answer is helpful