Maiale vs. porco vs. suino

The Italian language has three main words for 'pig': 'maiale', 'porco', and 'suino'. While they all refer to the same animal, their usage and connotations differ significantly.

Maiale

'Maiale' is the most common and neutral term for a pig. It is used in everyday language and is generally considered inoffensive.
Il maiale è un animale da fattoria molto comune.
(The pig is a very common farm animal.)
Abbiamo comprato della carne di maiale per la cena.
(We bought some pork for dinner.)

Porco

'Porco' can mean pig, but it often carries a negative or vulgar connotation. It is frequently used as an insult or in expressions of frustration.
Quel porco mi ha rubato il portafoglio!
(That swine stole my wallet!)
Porco cane! Ho dimenticato le chiavi.
(Damn it! I forgot the keys.)

Suino

'Suino' is a more formal or scientific term for pig. It is often used in academic or professional contexts, particularly in the meat industry.
L'industria dei suini è un settore importante dell'agricoltura italiana.
(The swine industry is an important sector of Italian agriculture.)
Il veterinario si specializza nella cura dei suini.
(The veterinarian specializes in the care of pigs.)

Summary

While 'maiale' is the standard, neutral term for pig, 'porco' often carries negative connotations and can be used as an insult. 'Suino' is more formal and typically used in professional or scientific contexts. Understanding these distinctions is crucial for using the right word in the appropriate situation.