Add
Add verb - To join (something) to a mass, quantity, or number so as to bring about an overall increase.
Usage example: add another cup of flour to the mixture
Boost and add are semantically related in increase topic. In some cases you can use "Boost" instead a verb "Add", when it comes to topics like adjoin, enlarge.
Boost
Boost verb - To make greater in size, amount, or number.
Usage example: a promotion that boosted the number of interested customers milling about the showroom
Add and boost are semantically related in increase topic. Sometimes you can use "Add" instead a verb "Boost", if it concerns topics such as enlarge.
Mutual synonyms
Common collocations
Both words in one sentence
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A foul-mouthed cyborg with a humongous chainsaw axe with a rocket booster at the back to give a speed boost or add more force to every swing.
Source: An Axe to Grind - If you want to boost your overall strength, you practice lifting more and more weight, but if you want to boost endurance, then you add more reps.
Source: Stat Grinding - The Burnout games from Takedown onwards are similar to Need for Speed, but add refilling the boost all the way by making your opponents crash, and triple the fun quotient.
Source: Limit Break / Video Games
Cite this Source
Boost and Add. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/add/boost
Add & Boost. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/add/boost>.
Boost or Add. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/add/boost.
Google Ngram Viewer shows how "add" and "boost" have occurred on timeline