We have a lot of articles on grammar. Here are some pointers to things that (hopefully) ought to keep everything consistent.
- Follow descriptivism not prescriptivism, though it may be worth noting prescriptions (and proscriptions) where necessary. This is in line with nearly all modern grammarians.
- Beware of websites about grammar. The authors both (1) oversimplify (2) make mistakes.
- English has only two tenses, despite what a lot of grammars say.
- English has a gender system (note: English (generally) lacks gender concord - it does not lack gender).
- A pronoun is a type of noun. Don't say "noun or pronoun", say "a noun" or "a noun (including a pronoun)"
- A phrase can be a single-word phrase. So say "phrase" or "a phrase (including a single-word phrase)" if clarity is desired.
- Don't confuse adjective/adjective phrase/adjectival phrase; they are all subtly different. The articles explain the differences.
- Don't confuse adverb/adverb phrase/adverbial phrase; they are all subtly different. The articles explain the differences.
- Don't confuse noun and noun phrase; they are subtly different.
- Don't confuse preposition and prepositional phrase; they are subtly different.
- Don't confuse tense, aspect (and together, aspective tense)