Phrase suggester and ngrams

[Imran_Azad]

The phrase suggester documentation makes a few references to ngrams: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-suggesters-phrase.html

Since it's possible to get the phrase suggester to work against a field that isn't tokenised using ngrams, my question is what disadvantages are there over using a non-ngram field over an ngram field? What's the best practice approach?

[nik9000 (Nik Everett)]

Use ngrams with 2 and 3 gram size. If you don't have ngrams then the phrase
suggester works just like the term suggester. Experiment! Playing with that
suggester is how I got started working with es.

[Imran_Azad]

Thanks Nik.