Nouns

(n)herethe present location; this place; location, proximal pronoun; demonstrative pronoun, location; quantifier: demonstrative determiner, singular, proximal“where do we go from here?”

Adjectives

(s)herebeing here now“is everyone here?”

Adverbs

(r)herein or at this place; where the speaker or writer is“I work here”, “turn here”, “radio waves received here on Earth”
(r)herein this circumstance or respect or on this point or detail“what do we have here?”, “here I must disagree”
(r)here, hitherto this place (especially toward the speaker)“come here, please”
(r)hereat this time; now“we'll adjourn here for lunch and discuss the remaining issues this afternoon”