chug (n.)youdaoicibaDictYouDict
1866, echoic of a working steam engine. As a verb, from 1884. Related: Chugged; chugging. Drinking sense attested by 1940s (chug-a-lug), probably imitative of the sound of swallowing.
hug (v.)youdaoicibaDictYouDict
1560s, hugge "to embrace," of unknown origin; perhaps from Old Norse hugga "to comfort," from hugr "courage, mood," from Proto-Germanic *hugjan, related to Old English hycgan "to think, consider," Gothic hugs "mind, soul, thought." Other have noted the similarity in some senses to German hegen "to foster, cherish," originally "to enclose with a hedge." Related: Hugged; hugging. The noun was originally (1610s) a hold in wrestling. Meaning "affectionate embrace" is from 1650s.