ほど (hodo) - (N5 - N4) - Both より ~ のほうが (yori ~ no hou ga) and ほど (hodo) are used to compare two items. However, より ~ のほうが (yori ~ no hou ga) is used to express 'more than' or 'less than,' while ほど (hodo) is used to express 'to the extent of' or 'as much as.'
よりも (yorimo) - (N5) - より ~ のほうが (yori ~ no hou ga) and よりも (yorimo) both express a comparison between two items. However, より ~ のほうが (yori ~ no hou ga) is used to express 'more than' or 'less than,' whereas よりも (yorimo) is used to express a less definite comparison, meaning 'even,' 'more,' or 'than.'
くらい (kurai) - (N5) - より ~ のほうが (yori ~ no hou ga) and くらい (kurai) both express a comparison between two items. However, より ~ のほうが (yori ~ no hou ga) is used to express 'more than' or 'less than,' while くらい (kurai) is used to indicate an approximate degree of a certain quality.
Useful Vocabulary that appeared in this page
Quiz
What does the following sentence mean? バナナよりリンゴのほうが好きです。