Yes, "swamp" and "damp" are an example of slant rhyme because they share similar ending sounds (the "-amp" sound) but are not exact rhymes.
Of the pairs you offer: 'swamp' and 'damp' are the slant rime. 'hear' and 'near' is a true rime; fen / feeds, warm / true do not rime at all. In a true rime, the vowel sound and the consonants which follow it are a precise match: beat / sweet, hope / soap, grew / true. In a slant rime, the vowel sounds are a near match (any trailing consonants will normally be identical): beat / mate, hope / shape, grew / sow. You need to be careful with slant rime (most teachers aren't): sometimes a true rime in one accent will be a slant rime in a different one. Mayor / chair is a true rime in the English home counties, but a slant rime most other places that English is spoken.
Damp to wet.
Words that rhyme with damp: Camp Stamp Lamp Ramp Tramp Samp Cramp Framp Amp Vamp
a tract of soft, very damp land, usually low lying.
No, "camp" does not rhyme with "land." Please see the related questions below for "What rhymes with camp?" and "What rhymes with land?"
damp dad
It is called peat and is simply decaying plant matter. It acts like a sponge and tends to stink.
Am, dam, ham, jam, lamb, lam, ma'am, Pam, ram, Sam, spam, slam, sham, scam, tam, wham,lambsamcramrambamhamjampam
Its swampI think a better synonym is plain (extensive area of flat land). A swamp is a wet damp place, prairies or plain are not necessarily wet.
Toads of genus Bufo live 35 years.
<Yes, there is. The word is "en" (meaning "of the current state of mosture"), which is prepended with the modifier "damp" (meaning "to increase a quantity with relation to time or distance").> I don't think that is correct. The root word is damp and it has a suffix, 'en. It is used to mean to make damp. For example, please dampen the cloth.
Damp swamps or foggy land like a rain forest for example.