What is the Difference Between Blazer and Jacket?

The main differences between a blazer and a jacket (specifically a suit jacket) can be summarized in terms of their construction, style, and the occasions they are suitable for:

Construction: Blazers are less formal and typically have unlined, unpadded shoulders, and soft lapels, while suit jackets have a more structured and tailored construction, often featuring shoulder pads and edge-stitched lapels. Blazers often have shirt-style shoulders, giving them a softer and more relaxed fit.
Style: Blazers are solid-colored jackets with contrasting (often metal) buttons and are suitable for both casual and semi-formal occasions. Suit jackets, on the other hand, have matching trousers made from the same fabric, making them more formal and appropriate for formal occasions.
Occasions: Blazers are versatile and can be worn for various occasions, from formal events to business meetings and ceremonies. They are often considered a "go-to" piece for a well-dressed man's wardrobe. Suit jackets, being more formal, are typically worn for special occasions or when a more dressed-up look is required.

In summary, blazers are less formal, more versatile, and have a softer construction compared to suit jackets, which are more structured, formal, and typically worn with matching trousers. The choice between a blazer and a suit jacket depends on the occasion, personal style, and how they are combined with other clothing items.