The Spanish word 'hiel', meaning 'bile' or 'gall', comes directly from the Latin word 'fel' which had the same meaning. The initial 'f' sound in Latin transformed into an 'h' sound in Spanish, which is a common sound change that occurred in many Spanish words derived from Latin (like 'hijo' from Latin 'filius'). The spelling change from 'fel' to 'hiel' also reflects typical Spanish phonological development, where a vowel 'i' was inserted to break up certain consonant combinations.

While 'hiel' itself is a relatively basic word in Spanish, it has given rise to related terms like 'hielo' (ice) - though this is actually from a different Latin root. Due to the specific nature of its meaning (bile/gall), there aren't many commonly used Spanish derivatives that would be simpler for students to recognize.

The English word 'fell' (as in 'fell poison') and 'felon' share a distant connection to this Latin root 'fel', though they've taken on broader negative connotations beyond the original meaning of 'bile' or 'gall'. The medical term 'fellic' (relating to bile) is also derived from the same Latin source. While these English cognates exist, they are relatively technical or archaic, making them less useful as memory aids for Spanish learners.