• Basic forms
• 占める — occupy; account for / base form
• 占めます — occupies; accounts for / masu form
• 占めた — occupied; accounted for / ta form
• 占めて — occupying … / te form
• 占めない — do not occupy / negative
• 占めれば — if (something) occupies / conditional
• Common expressions
• 市場の半分を占める — occupy half the market
• 重要な地位を占める — hold an important position

占める（しめる） is an ichidan transitive verb. It is used for physical space, positions, or proportions, and is common in factual and abstract descriptions.

• Basic forms
• 占う — tell fortunes; divine / base form
• 占います — tells fortunes / masu form
• 占った — told fortunes; divined / ta form
• 占って — divining … / te form
• 占わない — do not divine / negative
• 占えば — if (one) tells fortunes / conditional
• Common expressions
• 未来を占う — tell the future
• 運勢を占う — read one’s fortune

占う（うらなう） is a godan transitive verb. It refers to fortune-telling or divination, and is commonly associated with traditional or symbolic practices.