Deutsch: Sternbild / Español: Constelación / Português: Constelação / Français: Constellation / Italiano: Costellazione /
A Constellation is a special pattern formed by a group of visible stars on the celestial sphere, that area, is called a constellation. Hopefully, images would help you to make it more clear.
*There are officially 88 constellations as shown in the picture, can be reminded by the 88 keys of the piano.
* image credit -- naturenoon.com*