ἄλγος
álgos
“pain”
6 words in English grow from this root.
Analgesia
Medicineἀν-an-
“absence of pain”
Analgesic
Medicineἀν-an-
“without pain”
Arthralgia
Medicineἄρθρονárthron
“joint pain”
Myalgia
Medicineμῦςmŷs
“muscle pain”
Neuralgia
Medicineνεῦρονneûron
“nerve pain”
Nostalgia
Philosophyνόστοςnóstos
“the ache of homecoming”