f, fahr, fahrenheit

b, c., fl, d, l, e, g, s, a, d., f, cent, j, o, t, h, m, mo, u, v

activated carbon, activated charcoal, adamant, black lead, carbon 14, carbon black, crack, diamond, graphite, lampblack, plumbago, radiocarbon, smut, soot

abcoulomb, ampere-minute

charge unit, chemical element, degree, element, hard drug, large integer, programing language, programming language, quantity unit, speed, velocity

100, a hundred, ampere-second, atomic number 6, carbon, cardinal, celsius, centigrade, centred, century, cocain, cocaine, coke, coulomb, degree celsius, degree centigrade, hundred, light speed, one c, one hundred, snow, speed of light