Random worldbuilding for nothing in particular: Dwarvish last names.
When dwarvish workers and artisans first came to human cities for work, humans soon noticed that all dwarves seem to have last names ending in the same suffix. Soon enough they put together that these names don't go by families, but by occupation. Blacksmith is a blacksmith, Goldsmith is a goldsmith, a mason is called Stonesmith and carpenter a Woodsmith. And a horse breeder is called a Horsesmith.
(While humans would classify dwarf horses as ponies, dwarvish languages have no separate words for "horse" and "pony" and insist that dwarf horses are called horses since the way humans say "pony" seems degoratory.)
The word that humans previously assumed meant "smith" is simply the dwarvish blanket term for "one who works with their hands to manufacture/maintain." Humans originally started referring to any random dwarf they don't know with simply the suffix in a dismissive "they all have the same names anyway" sort of way, but in dwarfish society addressing someone you don't know in this way, "hey you, Craftsman" is considered perfectly respectable.
Once more dwarf society began to pour into human lands, humans noticed two other types of last names: -Trader, and -Commander. Traders are sellers, peddlers, merchants of all sorts, and while first encountering Silktraders, Goldtraders and Spicetraders might lead one to think that they are a class above -Smiths, they are not. Any street hawker, peddler or common grocer is just as much a -Trader as a merchant of kings is.
There are dwarfish jokes about how a farmer who grows vegetables and then goes to the town to sell them is a Turnip-smith at home but a Turnip-trader in the city, but getting the suffixes mixed up is a serious offense. Calling a dwarvish doctor a "seller of healing" instead of a "crafter of healing" would imply that they do their occupation for financial profit instead of a sacred calling, and is a stab-worthy insult. And they won't stitch you up afterwards.
The -Commander class is as one would expect, for leaders and commanders. The chief of a village or head of a clan is often known as "[clan name] commander", but more often it is the title for military officers and government officials. A centurion is called Hundred-Commander, a higher officer is a Thousand-Commander. The master of a spy network is "Commander of Secrets" and the national chief accountant is "Commander of Coin".
While dwarf societies are technically speaking autocracies with a single leader, humans have yet to reach an agreement about how to translate the leader's title. Most settle for "chief", as king/queen/emperor/empress would require knowing the current ruler's gender, and dwarves consider such information a matter of extreme privacy. The official dwarvish title of the ruler is "folksmith", "one who works with their hands to make/maintain a people".
