TED-5 keyword

1.porcelain:a hard but delicate, shiny, white substance made by heating a special type of clay to a high temperature, used to make cups, plates, decorations, etc.
E.g:he tea cups are porcelain.

2. prospective:people who are expected to buy something, employ someone, become parents, etc.
E.g:Given the fact that a prospective student is bombarded by prospectuses, selecting a suitable course is not easy.

3.significantly:in a way that is easy to see or by a large amount.
E.g:My piano playing has improved significantly since I started with a new teacher.

4.shifting:always changing or moving.
E.g:They lost their way in the shifting sands of the Sahara.

5.voyages:a long journey, especially by ship.
E.g:He was a young sailor on his first sea voyage.

link-
<div style="max-width:854px"><div style="position:relative;height:0;padding-bottom:56.25%"><iframe src="https://embed.ted.com/talks/lang/en/oliver_elfenbaum_how_does_the_stock_market_work" width="854" height="480" style="position:absolute;left:0;top:0;width:100%;height:100%" frameborder="0" scrolling="no" allowfullscreen></iframe></div></div>