(tier) is a suffix that denotes an item is divided into tiers, this suffix is always accompanied by a numerical value.
Navbox JSON: {"groups":[{"title":"[[Items]]","contents":[{"text":"(unf)","link":"(unf)"},{"text":"(u)","link":"(u)"},{"text":"(empty)","link":"(empty)"},{"text":"(full)","link":"(full)"},{"text":"(w)","link":"(w)"},{"text":"(m)","link":"(m)"},{"text":"(kg)","link":"(kg)"},{"text":"(a)","link":"(a)"},{"text":"(nz)","link":"(nz)"},{"text":"(lg)","link":"(lg)"},{"text":"(sk)","link":"(sk)"},{"text":"(wound)","link":"(wound)"},{"text":"(tattered)","link":"(tattered)"},{"text":"(+)","link":"(+)"},{"text":"(-)","link":"(-)"}]},{"title":"[[Equipment]]","contents":[{"text":"(e)","link":"(e)"},{"text":"(i)","link":"(i)"},{"text":"(p)","link":"(p)"},{"text":"(broken)","link":"(broken)"},{"text":"(l)","link":"(l)"},{"text":"(uncharged)","link":"(uncharged)"},{"text":"(inactive)","link":"(inactive)"},{"text":"(basic)","link":"(basic)"},{"text":"(attuned)","link":"(attuned)"},{"text":"(perfected)","link":"(perfected)"},{"text":"(r)","link":"(r)"},{"text":"(o)","link":"(o)"},{"text":"(d)","link":"(d)"},{"text":"(b)","link":"(b)"},{"text":"(lit)","link":"(lit)"}]},{"title":"[[Ornamental armour|Ornamentation]]","contents":[{"text":"(t)","link":"(t)"},{"text":"(g)","link":"(g)"},{"text":"(or)","link":"(or)"},{"text":"(r)","link":"(r)"},{"text":"(h1)","link":"(h1)"},{"text":"(h2)","link":"(h2)"},{"text":"(h3)","link":"(h3)"},{"text":"(h4)","link":"(h4)"},{"text":"(h5)","link":"(h5)"},{"text":"(dark)","link":"(dark)"},{"text":"(light)","link":"(light)"},{"text":"(dusk)","link":"(dusk)"}]},{"title":"Difficulty","contents":[{"text":"(beginner)","link":"(beginner)"},{"text":"(easy)","link":"(easy)"},{"text":"(medium)","link":"(medium)"},{"text":"(hard)","link":"(hard)"},{"text":"(elite)","link":"(elite)"},{"text":"(master)","link":"(master)"}]},{"title":"Miscellaneous","contents":[{"text":"(numerical)","link":"(numerical)"},{"text":"(blue)","link":"(blue)"},{"text":"(green)","link":"(green)"},{"text":"(red)","link":"(red)"},{"text":"(tier)","link":"(tier)"},{"text":"(dry)","link":"(dry)"}]}],"name":"Suffixes","title":"[[Suffixes]]"}