The terms "animate" and "inanimate" are simply convenient linguistic labels which reflect the two-way Cheyenne division of everything in the world. There may be better terms for Cheyennes to use for these two categories. For instance, one of the easiest ways to test whether a noun is animate or inanimate is for a Cheyenne speaker to say whether tse'tohe ('this/these,' animate) or he'tohe ('this/these,' inanimate) would be used with that word. For example, a Cheyenne speaker will tell you that only tse'tohe can be used with vo'ęstane 'person'. And he will also tell you that only he'tohe can be used with semo 'boat.' So, for Cheyenne speakers, it may be more convenient to refer to the two types of nouns as "tse'tohe words" and "he'tohe words", than using the technical labels of animate and inanimate.
As expected, animals and people are part of the animate group. So are spirits and trees, but not bushes, grass, or plants. The sun, moon, and stars are animate, and so are rocks. Some body parts (especially some, but not all, having to do with reproduction) and some clothing (especially clothing made with fibers) are animate, but other body parts and pieces of clothing are considered inanimate. Some items of food are animate, while others are inanimate.
Here are some animate and inanimate nouns:
ANIMATE INANIMATE Cheyenne English Cheyenne English people vo'ęstane person hë'e woman hetane man ka'ęškone child ma'hahkeso old man animals, birds, insects poeso cat vaotseva deer ve'keso bird hameško beetle (cf. hameško spoon) hahnoma bee me'šemehne caterpillar spirits ma'heono spirit beings Ma'heo'o God seoto ghosts (of dead people) mâhta'soomaho spirits (of people) mestaeo'o ghosts/spooks nesemoono spirit helpers trees and related wood items hoohtsęstse tree šestoto'e pine maxe log kâhamaxe stick hestoomo'ke bark hesotseve root of tree celestial objects eše'he sun hotohke star body parts hestahpe brain me'ko head/hair hestsetato kidneys he'e liver hesta heart he'po lung matonęše belly heta'e gland mata'xevoto testicles vetoo'ôtse penis matanane breasts ma'kesta vulva mo'eško finger (cf. mo'ęško ring) ma'ahtse arm/hand mâhtoohevo nail ve'henôtse eyebrow ma'exa eye hesevo calf mâhtse'ko leg ma'eeme snot še'ęškema wart veveto horns he'pe rib meeno feathers matsenoonôtse wings clothing estse'he shirt/coat hohkęha'e hat hoestoto dresses hoestato belt heva'keehestoto scarves ho'ota choker nęhpe'ęhestôtse diaper hone'komo button mo'kęhanôtse shoes geological objects ho'honaa'e rock heseovo'e sand ho'e land o'he'e river food mesęhestoto potatoes henene tomato ma'xemeno apples (Montana) ma'xemenôtse apples (Okla.) mâhoo'o melon he'ehesono rice penôheo'o flour/wheat hestovo'ęškono mushrooms ho'enoono sweet potatoes mâhaemenôtse corn monęškeho beans mo'ôhta'ene turnips anonevee'tose carrots ho'evohkôtse meat ame pemmican kohkonôheo'o bread hohpe soup toys hohtseme ball neto'ôheo'o top no'ôheo'o bat mene'keso doll âhko'a'haseono dominoes amo'keneo'o wagon tools, grooming implements tseene'eheo'o combs hohpo'easeehestôtse barrette penôhemenahtôtse pounding stone peeneo'o grinder o'ęseena file eehaseo'o whetstone/file hahpaneo'o pliers hasoo'o crowbar hohkôxe axe tôhohko hammer