Answers:
A carton is generally a smaller container than a crate, and is usually made from paper, paper pulp, cardboard, etc. with or without plastic sheet covering for added strength. Computers, small electronic items, soda cans, jelly bottles, etc. are a few of the numerous items which are packed in cartons. By their very nature, cartons carry lesser weights than a crate.
A crate isa container made from wood. wooden planks, or other material that can take heavier loads than what a carton would, such as heavy machinery. Nails are used to hold the wooden planks together, and some box strapping is also used to give additional strength.