This is the 12004th most frequent Portuguese word.
receberiam
"Receberiam" means "they would receive" in English.
Here 'receberiam' is used as the main verb in a conditional (hypothetical) sentence, expressing an action that would happen under certain circumstances.
Eles receberiam ajuda se precisassem.
They would receive help if they needed it.
In this sentence, 'receberiam' is used to express a hypothetical outcome dependent on the initial conditional clause.
Se ganhassem na loteria, receberiam muitas felicidades.
If they won the lottery, they would receive a lot of happiness.
'Receberia' here suggests a possibility tied to the fulfillment of a specific condition.