Runa sits next to 4 phonetic neighbors — Luna, Lena, and Una are the closest matches by sound. Most share Runa's Norse-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"flowing stream"
"true image, sacred icon"
"beautiful as a painting, child"
"strong, resilient one"
"old age (Norse mythology personification)"
"peace"
"home ruler"
"beautiful second"
"wisdom, skill"
"divine protection, helmet of the gods"
"carp fish; symbol of perseverance and good luck"
"war, combat"
"beautiful and honest"
"fame"
"messenger of the gods"
Similar sound: These names share phonetic patterns with Runa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Runa.
Rhythm: Runa is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.