These words mean almost the same thing in everyday use. Sometimes scientists use "gravity" for the force that pulls objects towards each other, and "gravitation" for the theory about the attraction.
ð iː z WORD_BOUNDARY w ɜː d z WORD_BOUNDARY m iː n WORD_BOUNDARY ɔ l m oʊ s t WORD_BOUNDARY ð ə WORD_BOUNDARY s eɪ m WORD_BOUNDARY θ ɪ ŋ WORD_BOUNDARY ɪ n WORD_BOUNDARY ɛ v ɹ ɪ d eɪ WORD_BOUNDARY j uː s WORD_BOUNDARY s ʌ m t aɪ m z WORD_BOUNDARY s aɪ ə n t ɪ s t s WORD_BOUNDARY j uː s WORD_BOUNDARY ɡ ɹ æ v ɪ t i WORD_BOUNDARY f ə ɹ ð ə WORD_BOUNDARY f ɔ ɹ s WORD_BOUNDARY ð æ t WORD_BOUNDARY p ʊ l z WORD_BOUNDARY ɑ b d̠ʒ ɛ k t s WORD_BOUNDARY t ə w ɔ ɹ d z WORD_BOUNDARY iː t̠ʃ WORD_BOUNDARY ʌ ð ə ɹ WORD_BOUNDARY æ n d WORD_BOUNDARY ɡ ɹ æ v ɪ t eɪ ʃ ə n WORD_BOUNDARY f ə ɹ ð ə WORD_BOUNDARY θ iə ɹ i WORD_BOUNDARY ʌ b aʊ t WORD_BOUNDARY ð ɪ WORD_BOUNDARY ʌ t ɹ æ k ʃ ə n WORD_BOUNDARY