cost-effective vs. cost-efficient
[kawst-i-fek-tiv, kost-]
/ ˈkɔst ɪˈfɛk tɪv, ˈkɒst- /
adjective
[kawst-i-fish-uhnt, kost-]
/ ˈkɔst ɪˈfɪʃ ənt, ˈkɒst- /
