The word "notice" is a common term used for the observation and attention towards something. Some synonyms for the word "notice" include "observe," "perceive," "detect," "discern," and "attend." These words are used interchangeably and can enhance the writer's style and convey the intended message effectively. Another synonym for "notice" is "heed." "Heed" implies a greater level of attention and respect towards the observed subject. Other words that can replace "notice" include "scrutinize," "examine," and "monitor." The appropriate usage of synonyms for "notice" can significantly impact the tone and meaning of the text.