What do I refer to these people as?
The oldest is 20 and the youngest is 16. Would I call them chicos, muchachos or hombres?
2 Answers
It all depends on context. Clearly the 20 year old is an "hombre" but sometimes in casual conversation you'll hear one man say to several others, "Pues, vamonos muchachos."
The younger 16 year old can be referred to formally as a muchacho, but colloquially as a "Chico." Chico can refer to a young male, and is also a synonym for "pequeño" in certain cases, referring to either people of things.
Muchachos or chicos would be okey. Joven would also be good.
"Hombre" would be only in a case such as a soccer team where there is a player missing. Hay un jugador o un "hombre" de menos.