though A2

/ðoʊ/ Used to introduce a fact that makes the main statement surprising; even if; although.

proximity B2

/pɹɑkˈsɪm.ɪ.ti/ Nearness in space, time, or relationship.

approximate B2

/əˈpɹɑk.sə.mət/ Close to the real number or amount but not exact.