Rarity

rar·i·ty /ˈrerəti/ noun
plural rar·i·ties

1 [count] : a person or thing that is not common or usual : a person or thing that is not seen or does not happen often 
▪ In most sports, athletes over the age of 50 are rarities. ▪ Snow is a rarity in this part of the world.

2 [count] : something that is valuable because there are few of its kind 
▪ He is selling most of his collection, keeping only the real rarities.

3 [noncount] : the quality of being rare 
▪ The rarity of the disease makes it difficult to diagnose.

1. As the only monster heel in the company, he's a rarity in today's WWE.
2. The rarity of the species has increased their value on the illegal pet trade.
3. The Magic got solid production from their bench, a rarity in this lean season.
4. Which is a bit of a rarity for someone who is used to just flying past defenses.

In a rarity, rain enters forecast for Brownsville

Male teachers becoming a rarity in South Dakota classrooms

Research Shows Rarity of Global Heat Spike

1. Thanks to the delayed schedule caused by the NHL lockout, a rarity occurred Monday
2. The main difference between this monitor and the competition is that this model provides decimal temperature readings, which is a rarity
3. When he has time, often a rarity, he's able to visit partner Daisy Jung, who's based in Korea
4. In this village, ambulance visits from the main Lautoka hospital, prevalent on a weekly basis in the past, is now a rarity
5. This kind of group effort by day laborers is a rarity in the United States
6. I started out as an outdoor photographer in 1933, with funds from friends, self-taught at a time when photographers were a rarity