• Basic forms
• 聞く — listen to; hear; ask / base form
• 聞きます — listen to; ask / masu form
• 聞いた — listened to; heard / ta form
• 聞いて — listening … / te form
• 聞かない — do not listen / negative
• 聞けば — if (one) listens / conditional
• Common expressions
• 音楽を聞く — listen to music
• 話を聞かない — do not listen
• 道を聞いた — ask for directions
• More
• 聞いている — is listening / state

聞く（きく） is a godan transitive verb. It covers intentional listening, receiving information, and asking questions, depending on context.

• Basic forms
• 聞こえる — be audible; can be heard / base form
• 聞こえます — is audible / masu form
• 聞こえた — was audible / ta form
• 聞こえて — being audible … / te form
• 聞こえない — cannot be heard / negative
• 聞こえれば — if (something) can be heard / conditional
• Common expressions
• 音が聞こえる — a sound can be heard
• 声が聞こえた — a voice was audible
• 外から聞こえる — can be heard from outside
• More
• 聞こえている — is audible / state

聞こえる（きこえる） is an ichidan intransitive verb. It describes sounds reaching one’s ears naturally, without intentional listening.