7-10 uniform a particular type of clothing worn by all the members of a group or organization such as the police, the army etc

CASUAL---not formal or not for a formal situation

INCLUDE---if one thing includes another, the second thing is part of the first:

MARKER---an object, sign etc that shows the position of something:

LP---a record that turns 33 times per minute, and usually plays for between 20 and 25 minutes on each side

SELL OUT---If a shop sells out of something, it has no more of that particular thing left to sell

STOCK---a supply of something that you keep and can use when you need to

RECEIPT--a piece of paper that you are given which shows that you have paid for something:

AVAILABLE---something that is available is able to be used or can easily be bought or found:

INTERCHANGEABLE---things that are interchangeable can be used instead of each other:

STATIONERY---paper for writing letters, usually with matching envelopes

ALTERNATIVE--an alternative idea, plan etc is different from the one you have and can be used instead

PRACTISE---] to do an activity, often regularly, in order to improve your skill or to prepare for a test:

AIRMAIL---letters and packages that are sent somewhere using a plane, or the system of doing this: