How does one identify the type of wood a piece of furniture is made out of?

Question:I have an interest in vintage (Eames era, Danish, Mid-century) furniture. Are there any "tricks" of the trade to help me recognize the type of wood (Walnut, Teak, Elm...)?

Answers:
yes first you need to look at bare wood of each type. touch it smell it scratch it see how much it weighs . then look on the underside of the furniture the unfinished side and compare. it takes time to learn this but its not that hard