This is the 688th most frequent Japanese word.
批判
Criticism or critique.
Here, 批判 is used to mean 'criticism,' indicating the action of pointing out faults.
彼は政府の政策に対して批判をしている。
He is criticizing the government's policy.
In this sentence, 批判 is used as a noun to contrast with a positive suggestion, emphasizing the critical analysis aspect.
批判と建設的な意見は異なるが共に重要だ。
Criticism and constructive opinions differ but are both important.
Here, 批判 is part of 批判的 (critical), expressing the importance of being analytical for obtaining insights.