burk or berk or birk/buhk/ noun

• acct
• acculturate
• accumulate
• accumulation
• accumulative
• accumulator
• accurate
• accursed
• accusation
• accusative
• accusatorial
• accusatory
• accuse
• accused
• accustom
• accustomed
• AC/DC
• ace
• -acea
• -aceae
• acedia
• ace in the hole
• -aceous
• acephalous
• acer