"practiCe" in AE and BrE?

armchair=armchair?
reading lamp=table lamp?
nigga:
http://www.urbandictionary.com/define.php?term=nigga

armchair is a leglounge
reading lamp is a writing strobe
nigga is a brand name: http://www.volledigincorrect.nl/ecards/fotos/pimpin_nigga.jpg

Here is a website of Lamps Plus store;their search doesn't knows what a "writing strobe" is, but they carry a great variety of table lamps:
http://www.lampsplus.com/products/s_table-lamp/
So do OfficeMax Stores.