The terms that you refer to are footprint/package specifications (size, shape).
Here are links to the above components on digikey:
CMOS SMD (oscillator)
http://www.digikey.com/product-detail/en/epson/SG7050CAN-27.000000M-TJGA3/SER3999CT-ND/5175091
0207W (120 ohm resistor)
http://www.digikey.com/product-detail/en/tt-electronics-welwyn/WRM0207C-120RFI/985-1466-1-ND/3648019
0207W (2.7k ohm resistor)
http://www.digikey.com/product-detail/en/yageo/MCP100JR-2K7/MCP100JR-2K7-ND/2169183
