The words psi, scythe, sigh, xi sound the same but have different meanings and spellings. Why do psi, scythe, sigh, xi sound the same even though they are completely different words?
The answer is simple: psi, scythe, sigh, xi are homophones of the English language.
Parapsychological phenomena or abilities considered as a group.
pounds per square inch
The 23rd letter of the Greek alphabet.
A Greek letter, <bt>Ψ</bt>, <bt>ψ</bt>. It belongs to the Ionic alphabet, and stands for <em>ps</em> or <em>phs.</em> The character may be a modification of <bt>Φ</bt>, <bt>φ</bt>.
An implement consisting of a long, curved single-edged blade with a long bent handle, used for mowing or reaping.
To cut with or as if with a scythe.
To make a curving movement like that of a scythe, in mowing.
To mow; cut with a scythe, or as with a scythe.
To exhale audibly in a long deep breath, as in weariness or relief.
To emit a similar sound.
To feel longing or grief; yearn.
The 14th letter of the Greek alphabet.
The Greek letter <bt>Ξ</bt>, <bt>ξ</bt>, corresponding to the English <em>x</em> and <em>z.</em>
The Greek letter <bt>Ξ</bt>, <bt>ξ</bt>, corresponding to the English <em>x.</em>
The name for the 14th letter of <xref>Classical</xref> and <xref>Modern Greek</xref>. The 15th in <xref>Ancient</xref> and <xref>Old Greek</xref>.
Definitions from The American Heritage® Dictionary of the English Language, 5th Edition., from The Century Dictionary., from Wiktionary, Creative Commons Attribution/Share-Alike License. and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.
If they are spelled the same then they are also homographs (and homonyms); if they are spelled differently then they are also heterographs (literally "different writing").