Iron-deficiency anemia can cause fatigue (tiredness), shortness of breath, chest pain, and other symptoms. Severe iron-deficiency anemia can lead to heart problems, infections, problems with growth and development in children, and other complications.
Semantics is the study of meaning. It is a wide subject within the general study of language. An understanding of semantics is essential to the study of language acquisition (how language users acquire a sense of meaning, as speakers and writers, listeners and readers) and of language change (how meanings alter over time).
Semantics is the linguistic and philosophical study of meaning, in language, programming languages, formal logics, and semiotics. It is concerned with the relationship between signifiersâlike words, phrases, signs, and symbolsâand what they stand for, their denotation. In international scientific vocabulary semantics is also called semasiology. The word semantics was first used by Michel BrÃ©al, a French philologist. It denotes a range of ideasâfrom the popular to the highly technical ...