NZD/SGD is the exchange rate between the New Zealand dollar and the Singapore dollar, showing how many Singapore dollars one New Zealand dollar will buy. It is a regional cross that joins a commodity-linked currency with a tightly managed Asian one, and it sees relatively light trading, so spreads are wider than on the headline pairs.
The New Zealand dollar is the base currency and the Singapore dollar the quote currency, so a quote of 0.8200 means one Kiwi dollar buys 0.8200 Singapore dollars. A higher price means the Kiwi is gaining on the Singapore dollar, a lower price the reverse. You trade NZD/SGD as a forex CFD rather than exchanging cash: go long if you expect the Kiwi to advance, short if you expect it to retreat. Pips are measured at the fourth decimal place, and your profit or loss is the pips moved multiplied by how large your position is.
The two sides of NZD/SGD answer to very different forces. The New Zealand dollar follows the Reserve Bank of New Zealand, dairy prices and the broader risk mood, while the Singapore dollar is unusual in that the Monetary Authority of Singapore manages it against a trade-weighted band of currencies rather than by setting an interest rate. That band keeps the Singapore leg comparatively stable, so much of the pair's movement comes from the Kiwi side and from regional risk sentiment.
Say NZD/SGD is trading at 0.8200 and you buy one standard lot (100,000 New Zealand dollars), expecting the Kiwi to firm. Each pip is worth 10 Singapore dollars, so a 50-pip rise to 0.8250 gives:
50 √ó 10 = 500 Singapore dollars
A 50-pip fall to 0.8150 would instead cost 500 Singapore dollars. With the New Zealand dollar as the base currency, your margin at 30:1 is about 3% of the position's value, which magnifies both gain and loss.