Start from the root, not the episode.

• grammarthe art of letters
• glamourScots for grammar — learning, then occult learning, then enchantment
• grimoirea book of spells; the same word again, through French
• diagramdrawn across
• telegramwritten from afar
• programmewritten beforehand
• hologramwritten whole, in light
• anagramwritten back up again
• epigramwritten upon
• graphitethe writing stone

Beekes 2010, OED

• guestGermanic took the hopeful branch
• hostthe one who receives
• hostileLatin took the wary one: hostis, an enemy
• hospital*gʰos-pot-, the stranger-master
• hospitalitythe same
• hotelhospital, worn down by French
• hostagea stranger held
• xeniaGreek ξένος, the guest-friend — a different root, the same policy

Watkins 2011, de Vaan 2008, Kroonen 2013

• loud*ḱlutós — heard
• listenOld English hlysnan
• kleosGreek κλέος — fame, what is heard of you; the Iliad runs on it
• Cliothe muse of history — the one who is heard of
• clientLatin cluēre — one who listens to a patron
• Slavic slovoword; Slověne, the people of the word
• Urdu sunnāto listen — Sanskrit śru-
• Sanskrit śrávasfame, glory

Watkins 2011, Turner 1962–66, Beekes 2010

• humanLatin homō — the earthling
• humusthe soil itself
• exhumeout of the ground
• humbleclose to the ground
• bridegroomOld English guma, man — the r is a sixteenth-century intruder
• chameleonGreek khamai-léōn — the ground-lion
• chthonicGreek khthṓn, the earth beneath
• Persian zamīnearth — and Urdu zamīn, the same

Watkins 2011, de Vaan 2008, Beekes 2010

• purpleOld English purpure, via Latin purpura
• porphyrythe imperial purple stone
• porphyriathe disease that turns urine the colour of wine
• Porphyrogenitaborn in the purple — a child of a reigning emperor
• Tyrianof Tyre, where the murex was boiled
• PhoeniciaGreek phoînix, possibly the purple people — disputed
• murexLatin, the snail itself
• Bosporusunrelated — and put here so you check

Beekes 2010, OED

• terma limit; a word with its edges filed
• terminologythe study of terms — this show
• terminalat the end of the line
• determineto fix the boundary of
• exterminateto drive beyond the boundary
• Terminaliathe Roman festival of boundary stones, 23 February
• termiteNOT here — Latin termes, a woodworm
• Greek térmathe turning post in a race — the cognate

de Vaan 2008, OED