Old wives' tale and Traditional knowledge

Old wives' tale noun - A bit of lore passed on by word of mouth.

Traditional knowledge and old wives' tale are semantically related. In some cases you can use "Traditional knowledge" instead a noun phrase "Old wives' tale".

Traditional knowledge noun - Knowledge gained through tradition or anecdote.

Old wives' tale and traditional knowledge are semantically related. Sometimes you can replace phrase "Old wives' tale" with "Traditional knowledge", this phrases are similar.