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

MECHANISM---part of a machine or a set of parts that does a particular job:

CONTROL KEY--a particular button on a computer that allows you to do certain operations

SEALED---shut or protected with something that prevents air, water etc from getting in or out:

QUARTZ---a hard mineral substance that is used in making electronic watches and clocks:

SNOOZE ALARM---part of an ALARM CLOCK that you press to turn off the ALARM for a short period of time, so that you can sleep a little longer

CONVENTIONAL----- traditional and ordinary

ON OFF--an on-off switch is the thing you press to make a piece of electrical equipment start and stop working\

SALUTATION---a word or phrase used at the beginning of a letter or speech, such as ‘Dear Mr Smith’

CATALOGUE---a complete list of things that you can look at, buy, or use, for example in a library or at an art show: