Similar words
hilo
hebra is more about a single strand or fiber; hilo is the general word for "thread" or yarn.
Similar in other languages
Portuguese
fiapo
fiapo is the Portuguese word for the same thing — both mean "thread."
Practice
1 What does hebra mean?
thread
2 Fill the gap: Cortó una ___ de hilo.
Full sentence: Cortó una hebra de hilo. (He cut a strand of thread.)
3 Which fingerprint chart matches hebra?
hebra: neutral register, academic frequency, general domain, neutral connotation.