1. Having the same foci

Encyclopedia: Confocal

• burr oak
• burr-headed
• burrawong
• burred
• burrfish
• Burrhus Frederic Skinner
• Burrill Bernard Crohn
• burrito
• burrlike
• burro
• burro deer
• Burroughs
• burrow
• burrower
• burry
• bursa
• bursa omentalis
• bursal
• bursar
• bursary
• burse
• Bursera
• Bursera microphylla
• Bursera simaruba
• Burseraceae