If you do not plan to update it often and don’t need to store extra data with each word, a dawg (https://en.wikipedia.org/wiki/Deterministic_acyclic_finite_s...) is more compact. You often can merge leaf nodes.

For example, if you have words

   talk
   talked
   talking
   talks
   walk
   walked
   walking
   walks

there’s no need to repeat the “”, “ed”, “ing”, “s” parts.