Pocket-format Vietnamese dictionaries are much smaller and lighter—easy to carry (for example, about 4.5 × 3.0 inches and 0.4 lb). Larger reference or picture volumes are heavier and bulkier (examples up to about 10.1 × 7.7 inches and 1.45 lb).
Yes — several titles are bi-directional, offering both Vietnamese‑to‑English and English‑to‑Vietnamese sections or separate parts so users can look up words in either direction.
Picture dictionaries typically include color photographs, thematic topic groupings (around 1,500 words and phrases in the examples), Romanized forms alongside Vietnamese script, and free online audio recordings of vocabulary and sentences by native speakers.