Proverbs 14:
20The poor are shunned even by their neighbors,
but the rich have many friends.
31Whoever oppresses the poor shows contempt for their Maker,
but whoever is kind to the needy honors God.
The context and the parallelisms show that poor means financially poor.
The same word appears in Exodus 30:15
The rich are not to give more than a half shekel and the poor are not to give less when you make the offering to the LORD to atone for your lives.