If a word/term has numerous descriptive terms with regard to position, quality, et cetera, it must be pretty important, don't you think? If there are any more that you can think of, or any corrections that need to be made, please let us know by droppi
Black that IS faintly visible.
Black, IN patches OR stripes OR other marks.
charcoal; coal; black ink; India ink; ink stick; (Kanji)
Black border. Border line BETWEEN the black pattern AND other colors.
Soot sumi. Low quality.