זורה, בורר, מרקד are essentially the same act of labor as they all spectate undesired parts. They are are still categorized as separate melochos bc they are distinct acts that were done for the mishkan.

There something called כותש- pounding the grain to remove some bran stuck to the inside kernel. (It’s very similar to the melocho of threshing) This is not mentioned in the Mishna bc a poor person would skip this step in the process of making bread.

בורר- we have a confusing braisa that first permits borer and then outlaws it. The Genara presents five possibilities. The first two are rejected for their rationale and the last three are accepted. a. Borer is fine for Shabbos itself but forbidden for storage after Shabbos. b. Borrer is fine in smaller increments that the size of a fig and forbidden is larger sizes. c. Borrer is fine with ones hand and forbidden with utensils. d. Borrer is fine if the good is taken from the bad and forbidden if the bad is taken from the good e. Borrer is fine is it done for immediate eating and forbidden if it for later usage.

טוחן- grinding. Although the Av melocho is when the grinding also changes the form of the kernel, the Toldah is expanded to chopping beets into small pieces. Crushing dirt in preparation of an earthenware barrel would also be טוחן, or cutting logs into small pieces.

מחתך- measured cutting. When one cuts in specific way/size. If one cut log into specific size for woodchips. Another example is clipping the feather of a bird to give it the right size for stuffing a pillow.

בישול- the tanna actually calls it אופה bc it uses the normal case if someone preparing bread and not the mishkans case of cooking dies. Bishul is defined by softening the properties and has nothing to do with food particularly. Liquifying pitch would be bishul. If one has a moist peg and they heat it in order to harden it, they are doing bishul bc of the initial stage of softening the wood which causes the water to evaporate before it eventually hardens.

גוזז- shearing wool. It is usual to do this with a kli. However, there’s a toldah called תולש that includes the normal act of plucking a feather from a bird with ones hands.

מנפץ and טווה- the combing and spinning of the wool. This is usually done once the wool is already shorn from the animal. In the mishkans construction, a remarkable wisdom was granted and they actually performed these acts while the wool was still on the animal. However, in our times this is called an abnormal way and one is exempt.

קושר- tying a knot. One is liable only for an absolutely permanent knot; not a knot that will be untied.

מתיר- untying knots. In the mishkan they would tie and untie knots when trapping the חילזון when extending their trapping nets.

תופר- sewing two stitches. This is forbidden only if the stitches won’t come apart, like if someone tied them with a knot.