AWL 4. Words 21-30

happening, existing, or done before a particular time

a noticeable difference between people or things

used for introducing something that is a result of the fact that has just been stated

happening or coming after something else

a system of words, numbers, or signs used for sending secret messages. To put a message into code is to encode it, and to translate it back from code is to decode it

relating to work that needs special skills and qualifications

to solve a problem, or to find a satisfactory way of dealing with a disagreement

lines that are parallel are the same distance apart at every point along their whole length

a group of numbers that represent facts or that describe a situation

someone’s opinions or feelings about something, especially as shown by their behaviour