The 'not' is more stressed in the word noticeable. Word stress is a prominent syllable in the word. AnswerParty!
In linguistics, stress is the relative emphasis that may be given to certain syllables in a word, or to certain words in a phrase or sentence. The term is also used for similar patterns of phonetic prominence inside syllables. The word "accent" is often used with this sense, but it may be used for other kinds of prominence; stress specifically may thus be called stress accent or dynamic accent.
The stress placed on syllables within words is called word stress or lexical stress. The stress placed on words within sentences is called sentence stress or prosodic stress. The latter is one of the three components of prosody, along with rhythm and intonation. Phonology
Syllable stress of botanical names varies with the language spoken by the person using the botanical name. In English-speaking countries, the Botanical Latin places syllable stress for botanical names derived from ancient Greek and Latin broadly according to two systems, either the Reformed academic pronunciation, or the pronunciation developed initially in some large part by British gardeners, horticulturists, naturalists, and botanists of the 19th century.]clarification needed (What is the difference between these two systems?)[
What follow are the rules of stress of reformed academic pronunciation of Latin (intended to approximate the stress rules of ancient spoken Latin). Words of Greek origin are generally pronounced according to the same rules; native ancient Greek rules of stress are not used. Paroxytone
Algeria · Nigeria · Sudan · Ethiopia · Seychelles
Uganda · Zambia · Kenya · South Africa
Afghanistan · Pakistan · India
Nepal · Sri Lanka · Vietnam
China · Hong Kong · Macau · Taiwan
North Korea · South Korea · Japan
Malaysia · Singapore · Philippines · Thailand