chopping board;  cutting board
 boards covering a ditch (drainage, sewage, etc.);  grassroots (e.g. campaign);  door-to-door;  on the ground
 shingle roof;  house with a shingle roof
 battledore (early form of badminton racket)
 seat (horizontal part of a chair);  floorboard
 to get used to;  to become accustomed to;  to be at home (on the stage)
 chef (esp. of high-end Japanese cuisine);  cook;  area of a kitchen that contains the chopping board
 plank;  thick board;  plate glass;  heavy metal sheet (esp. welding);  heavy brocaded obi
 wooden board on which utensils for a tea ceremony are displayed
 small plank;  piece of wood
 salt rubbing;  sprinkling salt over a vegetable and rolling it on a cutting board
 artwork on wood, canvas, metal sheet, etc.
 rough-cut board;  construction lumber;  batten;  tie beam
 being stuck between a rock and a hard place;  being in a dilemma;  being torn between conflicting demands
 wooden floor;  room with a wooden floor;  changing room (at a public bath)
 sliding door (esp. when removed from its frame and used for carrying things or people);  large flounder
 chocolate bar;  bar of chocolate
 scrap lumber;  piece of wood
 wainscoting;  wainscotting;  wood paneling
 boards covering a ditch (drainage, sewage, etc.);  grassroots (e.g. campaign);  door-to-door;  on the ground
 wallboard;  wall decoration
 partition board;  plank used as a partition;  board used in a ship to prevent the cargo from moving around
 kitchen (in a restaurant);  cook;  chef
 plank of a bridge;  bridge plank
 leaf spring;  plate spring
 leaf spring;  plate spring
 galvanized sheet iron;  galvanised sheet iron
 panel;  scene-panel;  painted backdrop (panel at the back of a noh stage), on which a pine tree is painted
 movable floor boards;  trap door
 seam of joined boards;  cross grain (of wood);  thick card made from several sheets of washi paper
 crosscut plank;  rear part of a noh stage
 springboard;  diving board
 roof boards;  ceiling;  back board (furniture)
 corrugated sheet;  corrugated plate
 footboard;  gangplank;  scaffolding board
 blackboard;  board used for lacquering
 being on stage when the curtain opens;  wooden floor;  wooden-floored room;  thinly-sliced food grilled on a cedar board
 superior chef (Japanese cuisine)
 fingerboard;  fretboard;  finger plate
 removable ramps for trucks
 alcove slab;  wooden board placed in a tokonoma;  baseboard;  base plate
 sex show with audience participation
 piece of stiff fabric worn under an obi to give more shape;  batten plate;  stay plate
 door made of one or several wooden planks and no door framework
 board breaking;  board splitting
 rolling board (for noodles, bread, mochi, etc.);  pastry board
 panel strip;  butt strap;  batten;  fishplate
 siding (on a house);  clapboard;  weatherboard
 sheeting;  sheathing board;  cover
 cutting guide board for noodles
 wooden board used on the ridge-ends of a roof instead of an onigawara tile (sometimes covered in copper sheeting)
 screening panel (desk, etc.);  modesty board
 large wooden boards listing rankings hung, outside tournament venues
 Itayose method;  method of trading employed on Japanese exchanges
 thin cedar or cypress shingles (4.5-6 mm thick, used for shingling roofs of temples, shrines, etc.)
 stringer;  slanted staircase beam;  side plate;  side panel;  side sheet
 stringer;  slanted staircase beam;  side plate;  side panel;  side sheet
 bargeboard;  vergeboard;  gableboard
 layering;  placing a large amount of orders and cancelling before they are executed (with the intent of manipulating the market)
 plank raft;  display stand for seafood (Edo period)
 dissection puzzle (tangram, Sei Shonagon chie-no-ita, etc.)
 wooden board used for sounding clappers (kabuki)
 wooden board used for sounding clappers (kabuki)
 crown plate (armor, building, shipbuilding, etc.)
 thinly-sliced food grilled on a cedar board
 top board (of a table, counter, etc.);  surface
 pecten;  comb plate;  comb plate (of an escalator, etc.)