An oldie but goodie:
pine nut (which is a nut but is also the name of a town)
blitz/blitzing
careen/careening
hazard
tardigrade
incandescent/iridescence
wilt/wilting
the spanish word āacurrucarā [to snuggle/cuddle]
Cummingtonite
Cummingtonite - Wikipedia in case you rightly donāt believe itās a word.
You have to love 8 out of 10 cats do Countdown for going above and beyond regular Countdown!
I know, but itās cool because it is a word. Shouldnāt be, but you know, dictionaries.
fatuous
scapegrace
Upfulness
rampage
one-upmanship
Turquoise
A cool word and a cool colour.
that reminds me of cyan (and teal, but thatās not as cool of a word)
((these are my favorite colors, fun fact))
Callipygous or callipygian. (Wiktionary for illustration; NSFW)
My favorite Middle English phrase comes from Sir Orfeo: lef liif. Itās a term of affection for a lover: ādear lifeā or ābeloved life,ā literally. I love how just a change in vowel can produce that phrase.
One of my favourite colours has a cool name: alizarin crimson. The plant it comes from, madder, is also a cool word.
thanks to @antillese I know the difference between a solar and sidereal day
sputum (Iām getting over a cold)
Phytosanitation.
perseverate
psychopomp