Letters that make just-noticeable difference
s, a, o, j, b, d, e, f, l, n, c, r, t, i, u are letters that make 'just-noticeable difference'
Words within just-noticeable difference
ER, ice, ICE, AB, ab, notice, re, ti, difference, IC, en, otic, Ea, able, just, noticeable, ic, CE, not, no, US, NC, Re, LE, tic, Ce, Er, Fe, No, Ti, Ab, differ are words within 'just-noticeable difference'