Inconsistencies in names between appearance modifiers

[Atkana]

The four appearance modifiers (body, body part, color, tissue style) all use the same style in the tokens for describing their noun (how to refer to them in the game) and whether or not they should be plural. For the first three, the creature token APP_MOD_NOUN's first argument describes the noun to use, and the second is whether it should be singular or plural (internally, a value of 0 is used for singular, 1 for plural). For tissue style, it's the creature token TSU_NOUN, with the same arguments. However in the structures, the names assigned vary, even when describing the same thing:

bp_appearance_modifier

Noun label: noun
Plural label: single_plural

body_appearance_modifier

Noun label: noun
Plural label: ? (maybe anon_1 or anon_2?)
(Note that body descriptions are handled as special cases by the game, so these don't get used anyway, to my knowledge)

color_modifier_raw

Noun label: part
Plural label: unk_6c

tissue_styles_raw

Noun label: noun
Plural label: word_type

(All these can be found within df.creature-raws.xml)