Each entry gives the term in traditional and simplified form, its pinyin, the senses it carries in the classical corpus, the passages where it does real work, and how published translations have rendered it.
shuǐ gǔ qì
The qi extracted from food and drink — what the body lives on after the stomach has done its work and the spleen has carried the result outward. Chapter 29 makes it the hinge of its account of the limbs: the limbs take their qi from the stomach, but they cannot receive the qi of water and grain unless the spleen moves it, and when the spleen fails they weaken day by day until sinew, bone, muscle and flesh have nothing to live on. The phrase belongs to the chapter's earth side of things: water and grain are what the pharynx takes in, as opposed to the air that the throat takes in.
qì huà
The word on which the bladder's office turns, and the only place in this chapter where it appears. Fluid gathers and is held; it leaves because qi transforms it. Later usage widens 氣化 to cover every metabolic change in the body, and that wider sense is the one readers will meet elsewhere. Here it is narrower and more physical: the step by which what is stored becomes what can be discharged.
qū
The flank — below the arm, above the ribs. Chapter 48 swells it in both the lung's and the liver's 雍, which is why the two entries read so nearly alike; what separates them is the company, panting in the lung and fright on lying down in the liver.
qì lì
What is rooted outside, and stands by its qi. The paragraph runs: 根于外者亦五，故生化之别，有五氣、五味、五色、五類、五宜也…根于外者，命曰氣立，氣止則化絶. So 氣立 is the counterpart of 神機: where what is rooted within has a mechanism that goes on until the spirit leaves it, what is rooted without has only the season's qi to stand on, and the moment that qi stops, its transformations stop with it. The chapter gives them as a pair, and both in the same breath: 根于中者，命曰神機，神去則機息；根于外者，命曰氣立，氣止則化絶. 氣立 is the weaker of the two, and it is by the two together that the chapter divides the living world — what carries its root in itself, and what carries it in the season.