1. p - Noun
2. p - Adjective
3. p - Verb
4. p - Adverb
5. p - Preposition
6. P - Proper noun
a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms
the 16th letter of the Roman alphabet
Source: WordNet