Today's (not new) words

These share a root, which I would have recognized in some but not others - and tended to doubt in the first one, which is today's word of the day - and a sense related to that root that I would not have connected:

pungent
compunction
poignant
puncture
punctual

From today's WOTD explanation:

"Pungent" implies a sharp stinging or biting quality, especially of odors, so it's not too surprising to discover the Latin verb "pungere" ("to prick, sting") at its root. "Compunction," "poignant," "puncture," and "punctual" share the same pointy root, and their meanings reflect its influence. Someone who feels compunction may experience the prick of a guilty conscience. Something that is poignant can be piercingly moving. And a punctured tire, pricked by a sharp point, can make it hard to be punctual — that is, to arrive "on the dot" or at a particular point in time.