Basic words:
* Punctual: On time; prompt.
* Puncture: A small hole made by a sharp object.
* Punctate: Marked with small spots or dots.
More complex words:
* Compunction: A feeling of guilt or remorse.
* Impugn: To challenge as false or questionable.
* Punctilious: Paying great attention to detail, especially in matters of etiquette.
* Acupuncture: A traditional Chinese medical practice involving the insertion of thin needles into specific points on the body.
* Punctuate: To mark or interrupt with punctuation marks.
* Punctiform: Shaped like a point or dot.
Derived from other Latin roots, but still related:
* Point: The sharp end of something.
* Pungent: Having a strong, sharp taste or smell.
* Apex: The highest point.
* Poignant: Evoking a keen sense of sadness or regret.
This is not an exhaustive list, as the Latin root "punct" can be combined with various prefixes and suffixes to create numerous words. However, these examples illustrate the range of meanings and usage of this root in English.