Trio

Three cards of the same rank. Three aces are the best trio and three twos are the lowest.
Straight Run
Three consecutive cards of the same suit. Ace can be used in the run A-2-3, which is the highest straight run. Next comes A-K-Q, K-Q-J and so on down to 4-3-2, which is the lowest. 2-A-K is not a valid run.
Normal Run
Three consecutive cards, not all of the same suit. A-2-3 is the best normal run, then A-K-Q, K-Q-J and so on down to 4-3-2. 2-A-K is not valid.
Colour

Any three cards of the same suit. When comparing two colours, compare the highest card; if these are equal compare the second; if these are equal too, compare the lowest. Thus the highest colour is A-K-J and the lowest is 5-3-2.
Pair

Two cards of the same rank. Between two such hands, compare the pair first, then the odd card if these are equal. The highest pair hand is therefore A-A-K and the lowest is 2-2-3
High Card

three cards that do not belong to any of the above types. Compare the highest card first, then the second highest, then the lowest. The best hand of this type is A-K-J of mixed suits, and the worst is 5-3-2.