rain / reign / rein [rein]
rain – n. & v. – n. liquid water precipitation or anything that similarly falls; v. – water falling from the sky etc.
reign – n. & v. – n. – the duration of a rule or when something predominates; v. – 1. to prevail, predominate, rule; 2. to persist, continue
rein – n. & v. – n. – 1. a long narrow strap used to lead or control animals; 2. something used to control or guide; v. – to fasten something with or control use the use of long narrow straps