You just broke the Internet with this question😁 Package (American) = Parcel (British) and Packet (British) A packet refers to plastic paper and cardboard recipients/containers that has sweets or food for example. A parcel is something that you send by post(mail). I hope that's clear.

You 'pack' a bag. You opened a 'packet' of noodles. A 'package' was delivered by the postman. Hope these examples help.

A package is something that you pack and send out. If you order something online, you are ordering a package. If something gets sent to your house (that comes in a box or bigger container) you are being sent a package. A packet typically refers to a group of papers stapled together. A teacher can hand you a packet of homework or you can be given a packet of documents. To pack is the verb used for putting something into a container. If you’re going on vacation, you’ll have to pack a suitcase. If you want to send your friend a gift, you must pack the gift. Hope this helped! :)

Yes they are all used correctly. You can also add 'ed' to the end of 'pack' to make 'packed' ie -The train was 'packed' with people.