紅

scarlet rosemallow (Hibiscus coccineus)

carnelian

Monascus purpureus (species of mold); ang-khak

(Chinese) Red Guards

red snow crab (Chionoecetes japonicus)

red hakama (worn by miko or noblewomen at court)

Not related to 昆布茶

kombucha; drink of northern Chinese origin made by fermentation of sweetened tea

Mahjong

red dragon tile

contest between two groups

practice game with one team divided into two groups; intra-squad game

beniaka; variety of sweet potato with red skin and sweet yellow flesh; product of the Kawagoe region

Nouns which may take the genitive case particle 'no'

bright red tinged with yellow

red dragon

Medicine

lupus erythematosus

green-winged macaw (Ara chloropterus); red-and-green macaw; scarlet macaw

red algae; Rhodophyta

purple yam (Dioscorea alata); water yam

purple fleshed sweet potato (any one of several different such)

Word usually written using kana alone

Conus pauperculus (species of cone shell)

red algae; Rhodophyta

youthful and endearing; rosy-cheeked and sweet

Food, cooking

kōbaiyaki (senbei punched into shapes, e.g. plum)

Idiomatic expression

match made in heaven; perfect match; great coupling; sika deer and maple leaves (a common motif in poetry and classical Japanese painting)

Medal with Red Ribbon

sockeye salmon (Oncorhynchus nerka)

ring finger

common redpoll (Carduelis flammea)

tree whose leaves turn red in autumn