Parecer, Spanish for “to appear”, comes from the Latin parere, meaning the same. As does the Spanish verb form, aparecer.
Obviously to some but not to others, from the same root comes the English appear as as well as… apparition. What is an apparition if not something that appears to you but doesn’t really exist?
We can see the relationship because the p‑r of parecer maps to the p‑r in both appear and apparition.