Describes something that is widely applicable, commonly seen, or not special. Used for general trends, common knowledge, typical cases, and popular opinions.
Generally speaking, prices in urban areas are higher than in rural areas.
It's generally said to be healthy, but in reality there's a lot of individual variation.
一般的 describes what applies broadly or commonly to things in general, while 人並み focuses on comparing a person's own level or life to that of ordinary people.
一般的 describes what is generally applicable or typical in a broad, often analytical sense, whereas ありふれた focuses on lacking novelty because it's seen everywhere.
一般的 means 'general, common in general' and is broader in scope, while ありがち is used for specific recurring patterns or mistakes within a particular context.