There kinds of professions:

The Artisan is the crafter profession of Star Wars Galaxies. They have high starting mental attributes and are not designed for combat. The unique feature of an Artisan is that they are builders of the society, they are the only ones who can create certain items and structures. They may be a passive profession but can make a lot of money and are valued by many other players.

The Brawler is a strong hardened warrior designed for hand to hand combat. There are very good at armed and unarmed melee combat. They have high health and quickness attributes but they are low in the focus category. This profession is the brute force of classes in Star Wars Galaxies.

The Entertainer is fun filled profession that is best used around other players. They can provide healing for ailments that other characters have. They are not strong warriors but are quick and have strong mental attributes.

A Marksman is a competent long range combatant. Most professions can use ranged weapons but the Marksman excels in them and can access a wider array of weapons. Marksmen have good agility and quickness and also good mental attributes.

The Medic is the healer of Star Wars Galaxies. It can heal its own and other players wounds and is essential in battle. Medics can also fight but they are more skilled in bandaging wounds. They have good health and focus attributes.

The Scout is the explorer profession of Star Wars Galaxies. Being able to travel quickly on foot and gather resources from the land, it makes a good all-around profession.

The Architect allows construction of houses and other buildings like factories, resource harvesters etc. Architects can also build furniture and are important in building the Player Association Hall which is a requirement for a Player Association.