We don't have synonyms for navasana yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are savasana, shavasana and navaratna.
(N) :
(Sanskrit: नावासन; IAST: nāvāsana), Naukasana, Boat Pose, or Paripurna Navasana (IAST: paripūrṇanāvāsana "Full Boat Pose") a seated asana in modern yoga as exercise.
(N) :
(Sanskrit: नावासन; IAST: nāvāsana), Naukasana, Boat Pose, or Paripurna Navasana (IAST: paripūrṇanāvāsana "Full Boat Pose") a seated asana in modern yoga as exercise.