frangible vs fragile What's the difference? Do we use them interchangeably?

by...means? What do "by ohter means" and "by even better means" mean in the following sentenses: "War is the continuation of politics by other means". "Chaos is the continuation of war, by even better means". My try: War is the continuation of politics in other ways of understanding it. Chaos is the continuation of war, ...help.

"ganc"? I've been rewatching Victorious serie lately, and I heared a Word that sounds like ganc (Silowitz telling Jade: "Don't be a ganc"). What does that mean?Never mind.., I found the answer myself. the word was gank...some kind of euphemism. http://victorious.wikia.com/wiki/Gank

Cómo ver el nombre de skype de otra persona? Sé que la otra persona tiene disponeble skype por ese cuadrito o icono o botoncito azul pero cómo lo miro? A dónde le doy para que me lo enseñe?

What does 'startle up' mean here? Context: Mr. Hosokawa is Nansei company's CEO. And he has been kidnapped (has been taken as hostage). Mr. Hosokawa could not seem to startle up any concern for Nansei. My try: ...to be afraid of any concern for...

What does 'going off' mean here? We promise: Words you may have taken for granted will reveal themselves in a whole new light, and, as a result, your “aha!” light bulb will be going off a lot. Does it mean to turn on or switch on...or to sound? For a light bulb to sound is kind of strange for me...

こんにちは こんにちは。私はアナです。今、基本的日本語を勉強ちゅうです。だから、とても少し日本語を出来です。