Now that I've been in BCN / Barca / Barcelona / the capital of the republic of Catalunya for a week, I feel competent enough to release a list of words/concepts that people mostly hear while in Barcelona.
Barceloneta - Mainly talks about the beach. I could go into in-depth details of how good it is, but imagine blue waters and a women's locker room in a gym. You'll get the idea.
La Caixa - Pronounced as La Kaaysha. Ubiquitous chain of banks and ATMs around BCN. There's literally 2 around every corner. Around where I stay, there're 4. I'm not kidding.
Plaza Catalunya - Also known as Centre of the World. Almost everything begins and ends at Plaza Catalunya. The place to get off at to go to La Rambla (see next).
La Rambla - Imagine a secluded, peaceful, wide, tree lined avenue in the centre of the city. Now throw in about 500 people per square foot, and about 1 musician / performer every 2 feet, and you have La Rambla. Place to take a walk, buy beer, gaze at street performers, buy pets, get robbed etc.
El Corte Ingles - Government approved place to get ripped off. Also known to be one of the largest chain of shopping centres in Barcelona. I got a pair of UK to Europe adaptors for 3.5 euros each, only to find out that I could buy a pair of these at my local Chinese store for 1 euro. Sucks.
Ferrocaril - Also called the metro at times, which it is not. Network of (mostly) underground trains that complement the existing metro service. Plus point - you can use your mobile phone despite being underground.
Gracia - THE place to hang out at. Full of pubs and restaurants to satiate every taste. Close to pretty much every other place in Barcelona. Suggested places to visit in Gracia: Plaza del Sol, Plaza de Revolucion and thereabouts.
Afternoon - Any time between 12 pm and 8 pm.
Early evening - Afternoon + 4 hours.
Late night - Early evening + 5 hours.
More to follow.