Group A              Group B
Text 1 (healthcare):   ache-ache            ache-pain
Text 2 (healthcare):   medicine-drug        medicine-medicine
Text 3(economy):       charge-charge        charge-bill
Text 4 (economy):      salary-salary        salary-pay
Text 5 (computer):     memory-memory        memory-storage
Text 6 (computer):     internet-cynerspace  internet-internet