14: Focuses on synonyms/related words. "Counterpart" and "measurement" are less related to each other than the other words which relate to appearance/appeal ("romantic," "attractive").

15: Seems to mix categories. "Government" and "technical" are somewhat related. "Parallel" stands alone. "Understand" is in a different category (comprehension).

16: Centers around ancient Egypt. "Pyramid," "Egyptian," and "century" (referring to time periods) fit. "Belongs" is the outlier.

17: Another mixed bag. "Construction" and "accurate" relate to building/precision. "Suggestion" is a different category. "Hi-jacket" seems like an OCR error; perhaps intended to be "high-jacket," a type of clothing, making it an outlier here.

18: Possibly related to legacy/memory. "Dedicate," "impressive," "reminder," and "descendant" could fit a theme of remembrance or honoring someone.

19: Another mixed group. "Remember" and "company" (perhaps in the sense of being with others) have a loose connection. "Technical" and "interview" are less related.

20: This set has "electric," "computer," and "fantastic" which could relate to technology or excitement. "Fascinate" also fits this theme.