Bilingualism is fluency in two languages. Multilingualism covers many languages, Polyglotism is speaking many languages, Diglossia is coexistence of two language variants.

Narcissist is obsessed with self and appearance. Egotist is self-centered, Exhibitionist loves showing off, Perfectionist demands high standards.

Autobiography is self-written life account. Biography is written by others, Memoir is personal recollections, Narrative is general storytelling.

Anarchist opposes government and authority. Cynic distrusts people's motives, Nihilist rejects all values, Pacifist opposes violence.

Epigraphy studies ancient inscriptions. Archaeology studies ancient cultures, Paleography studies old handwriting, Etymology studies word origins.

Ascetic refers to someone who practices strict self-discipline and renunciation for spiritual or moral reasons.

Torpor describes a state of physical or mental inactivity, being in between sleep and wakefulness.

Narcissism is characterized by excessive self-love, need for admiration, and lack of empathy for others.

Anchorite is a religious recluse who has withdrawn from society for spiritual reasons, especially in early Christianity.

Sesquipedalianism refers to using long, complex words unnecessarily. Verbosity is wordiness in general, Grandiloquence is pompous speech, and Bombast is inflated language.