entirely of single-word keywords. There are not many technical terminologies that are unfamiliar to the layperson. The list is not dominated words used in life science fields. Therefore, this list has exactly the reverse properties as the best performing keywords.
Worst 30 performing words in terms of YK.
spaces; sheep; dogs; Brazil; existence; cattle; law; injuries; cultivars; steel; equations; yield; education; Turkey; constituents; trauma; geometry; convergence; ceramics; waves; students; politics; alloys; fish; leaves; flows; spain; gender