Choose the correct one-word substitute for the phrase: "words written on the tomb of a person".

Introduction / Context:
This vocabulary question asks you to identify the exact term used for words carved or written on a person's tomb. Such words usually pay tribute to the dead person, summarising their life, qualities, or a thoughtful message. English has a specific noun for this and the exam expects you to distinguish between several similar looking words beginning with the prefix "epi".

Given Data / Assumptions:
- The phrase refers to words written on a tombstone or gravestone.
- The tone is commemorative or descriptive of someone who has died.
- The answer must be one single noun matching this description.
- All options are real English words but with different meanings and uses.

Concept / Approach:
The correct term is "epitaph". An epitaph is a short text honouring a deceased person, often inscribed on a tomb or plaque. "Epigram" is a clever, witty, short poem or remark. "Epitome" is the perfect example of a quality or type or a brief summary of a larger work. "Epicure" refers to a person who enjoys fine food and drink. Recognising the correct word depends on precise knowledge rather than casual familiarity with spelling.

Step-by-Step Solution:
Step 1: Identify the central idea in the phrase: words on a tomb in memory of a dead person. Step 2: Recall that "epitaph" is defined as an inscription on a tomb or a brief composition in praise of a deceased person. Step 3: Check "epigram". It is a short, witty saying and is not restricted to tombs. Step 4: Check "epitome". It means a perfect example or a summary, not specifically related to death or graves. Step 5: Check "epicure". It relates to someone fond of luxurious food and drink, again unrelated to tombs.

Verification / Alternative check:
Insert each option into a sample sentence. "The epitaph on his grave brought tears to the eyes of visitors" is natural and correct. "The epigram on his grave" would emphasise wit rather than remembrance and is not the standard term. "The epitome on his grave" and "The epicure on his grave" clearly do not make sense. This confirms that only one option matches the phrase.

Why Other Options Are Wrong:
- "Epigram": Focuses on cleverness and wit, which can appear in many contexts, not specifically on tombstones.
- "Epitome": Related to summarising or representing a perfect example, not to grave inscriptions.
- "Epicure": Describes a lover of fine food and drink, completely unrelated to the context of death or memorials.

Common Pitfalls:
Many learners mix "epitaph" and "epitome" because they look similar. The simple memory trick is to remember that "epitaph" ends in "taph", which sounds like "tomb". Linking the sound with the idea of a grave helps you choose correctly in the exam. Also note that spelling is important; even a small change in letters often changes the meaning entirely in English vocabulary questions.

Final Answer:
The appropriate one-word substitute is Epitaph, which means the words written on a tomb in memory of the deceased person.