IPA: /ˈvɔɪədʒər/
KK: /ˈvɔɪədʒər/
A person who travels to new places, especially to explore or discover new lands.
The voyager sailed across the ocean to discover new islands.
Voyager is formed from "voyage" (from Old French *viage*, meaning journey or travel) and "-er" (meaning a person who). A voyager is a person who undertakes a journey or travels, especially by sea.
Think of someone who goes on a 'journey' ('voyage') — the '-er' just means a person. A voyager is someone who travels.
No commonly confused words.